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River Heralds' Boon

Card details, ability facts, relationship assessments, similarity, and printings.

River Heralds' Boon

Instant

Put a +1/+1 on target creature and a +1/+1 on up to one target Merfolk.

$0.07

Commander: LegalModern: Legal

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Tags and classifications

Card attributes are distinct from extracted ability facts and inferred themes. AI themes and predicted tags are suggestions, not rules text.

Mana costs

× 1

Color identity

G

Mana value

Mana value 2

Theme tags

+1/+1 Counters

Timing tags

Timing Instant

Type tags

Instant

Predicted tags are currently unavailable.

Ability classification

Published revision
b7925c07-983e-4ef2-b1d9-e3ec54025e9b
Catalog cards
34,605
Classified
34,605
Complete
4,096
Partial
29,996
Unsupported
513

partial Extraction abilities-8

Incomplete card classification: unmodeled effect: Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.

Ability 1

spellunsupported

Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.

Active zone
stack
Trigger
Unavailable
Cost
No recorded activation cost.
Requirements
All of: Unsupported condition: unmodeled effect: Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.
Source span
0–87

Functional categories

cadence.one-shotdelivery.spell

Effects

No effect records were extracted.

Incomplete: unmodeled effect: Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.

Source evidence
Source
oracle
Revision
8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce
Rule
abilities-8
Confidence
Not calibrated

Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.

Ability 2

castcomplete

Cast River Heralds' Boon

Active zone
hand
Trigger
Unavailable
Cost
Mana {1}{G}
Requirements
All of: timing: instant
Source span
0–0

No functional category evidence is published for this ability.

Effects

cast · immediate

No additional explicit requirement.

  • requires mana · self G · amount 1
    action kind: noncreature_spell
  • requires mana · self generic · amount 1
    action kind: noncreature_spell
  • produces noncreature_cast · self spell · amount 1 · hand → stack
    No additional explicit requirement.
Source evidence
Source
scryfall
Revision
8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce
Rule
card-type-cast-event
Confidence
Not calibrated

Instant

Evaluate tempo for this card

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How ranking works

Balanced: 0.60*text + 0.20*tags + 0.10*color + 0.10*cost. Outputs are unitless rankings, not percentages or probabilities. Most similar shows the highest scores; Typical overlap is nearest the catalog median (0.110); Least similar shows the lowest scores.

Text uses cosine resemblance (−1 to 1) between 384-number embeddings when available, or lexical fallback otherwise. Tags use Jaccard overlap of approved tags and AI themes, excluding predicted tags and separately scored color/cost tags. Color compares W/U/B/R/G identity. Mana cost combines mana-value proximity, 1 / (1 + the difference), with mana-symbol overlap. Tags, color, and cost range from 0 to 1.

Model: bge-small-en-v1.5. 0 of 34,605 catalog cards currently have embeddings.

Card relationships

Published revision
b7925c07-983e-4ef2-b1d9-e3ec54025e9b
Catalog cards
34,605
Classified
34,605
Complete
4,096
Partial
29,996
Unsupported
513

Scoring revision: relationships-6. Loves, hates, neutral, mixed, conditional, and unknown remain distinct results.

Potential relationships

Evaluated 512 of 1,620 indexed candidates. Showing 12 of 341 bounded tied matches; alphabetical within ties.

A-Canopy Tactician

Conditional loves

Creature — Elf Warrior · Mana cost: {3}{G}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability 9b51b64d-24e1-40c2-95de-2cdd1fc49aee:0:1:abilities-8:90cc2cef64f66993d5b620a67f37f1741c1b9bc3d2b9bf074b56117ddfeb0f28 supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: 9b51b64d-24e1-40c2-95de-2cdd1fc49aee:0:1:abilities-8:90cc2cef64f66993d5b620a67f37f1741c1b9bc3d2b9bf074b56117ddfeb0f28

    {T}: Add {G}{G}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Arixmethes, Slumbering Isle

Conditional loves

Legendary Creature — Kraken · Mana cost: {2}{G}{U}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability caeb39ee-f0bb-4305-9e8b-b30ba0a74c78:0:3:abilities-8:5b511b5b8c007b7b4b62353ced7368e9765581d800fdae9fae6269b421a611c5 supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: caeb39ee-f0bb-4305-9e8b-b30ba0a74c78:0:3:abilities-8:5b511b5b8c007b7b4b62353ced7368e9765581d800fdae9fae6269b421a611c5

    {T}: Add {G}{U}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Burning-Tree Emissary

Conditional loves

Creature — Human Shaman · Mana cost: {R/G}{R/G}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability 327d9679-0049-4401-8dab-e0fb362306bd:0:0:abilities-8:788beaa2d890802990c1348973181709ac08c873e09fbf23597fa0d8443a25b7 supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: 327d9679-0049-4401-8dab-e0fb362306bd:0:0:abilities-8:788beaa2d890802990c1348973181709ac08c873e09fbf23597fa0d8443a25b7

    When this creature enters, add {R}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Canopy Tactician

Conditional loves

Creature — Elf Warrior · Mana cost: {3}{G}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability 8b20d6f4-6322-4435-92d5-acaae74774f4:0:1:abilities-8:e6f18282a63323d3fb14cb9b70da1a75722e2b3b273154ecfc984f9982f85b50 supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: 8b20d6f4-6322-4435-92d5-acaae74774f4:0:1:abilities-8:e6f18282a63323d3fb14cb9b70da1a75722e2b3b273154ecfc984f9982f85b50

    {T}: Add {G}{G}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Channel the Suns

Conditional loves

Sorcery · Mana cost: {3}{G}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability d1b1be96-b2aa-4386-97d2-eb0a8cc47210:0:0:abilities-8:16188cf269e6561d150ab79f66e5b976d2139a84e7e37ff9e8b56f6690427cca supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: d1b1be96-b2aa-4386-97d2-eb0a8cc47210:0:0:abilities-8:16188cf269e6561d150ab79f66e5b976d2139a84e7e37ff9e8b56f6690427cca

    Add {W}{U}{B}{R}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Composite Golem

Conditional loves

Artifact Creature — Golem · Mana cost: {6}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability 784970de-ef8c-4672-b5d0-24a4b0a978a3:0:0:abilities-8:0adbe41e5e54d07adf3a53912899181893cb209d95955494608b5fd8d871bae1 supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: 784970de-ef8c-4672-b5d0-24a4b0a978a3:0:0:abilities-8:0adbe41e5e54d07adf3a53912899181893cb209d95955494608b5fd8d871bae1

    Sacrifice this creature: Add {W}{U}{B}{R}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Crystal Quarry

Conditional loves

Land · Mana cost: Unavailable

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability ca68648f-fe3a-4770-9842-a3dc2310f099:0:0:abilities-8:3488db5c479a8e3e6a5441873272bb1720aa0fc1104c73e330309ea1ca2bc05e supplies mana for part of target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce's setup; remaining prerequisites are listed as conditions. This grants cast (hand → stack).

    enables · mana · impact 0.500 · conditional

    Conditions: missing prerequisite: requires mana (g); source supplies 1 mana for 2 total required; the same mana cannot cover multiple prerequisites; target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: ca68648f-fe3a-4770-9842-a3dc2310f099:0:0:abilities-8:3488db5c479a8e3e6a5441873272bb1720aa0fc1104c73e330309ea1ca2bc05e

    {T}: Add {C}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

  2. Source ability ca68648f-fe3a-4770-9842-a3dc2310f099:0:1:abilities-8:3488db5c479a8e3e6a5441873272bb1720aa0fc1104c73e330309ea1ca2bc05e supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: ca68648f-fe3a-4770-9842-a3dc2310f099:0:1:abilities-8:3488db5c479a8e3e6a5441873272bb1720aa0fc1104c73e330309ea1ca2bc05e

    {5}, {T}: Add {W}{U}{B}{R}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Darigaaz's Attendant

Conditional loves

Artifact Creature — Golem · Mana cost: {5}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability c0ad16d7-2550-47e0-8581-0e22b27cb0d0:0:0:abilities-8:4518715318ad48d0140a6850f1fbf686cb695a64d2b7fc7d0a9fc7418e4844b2 supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: c0ad16d7-2550-47e0-8581-0e22b27cb0d0:0:0:abilities-8:4518715318ad48d0140a6850f1fbf686cb695a64d2b7fc7d0a9fc7418e4844b2

    {1}, Sacrifice this creature: Add {B}{R}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

Deconstruct

Conditional loves

Sorcery · Mana cost: {2}{G}

Perspective
same controller
Status
conditional
Signed compatibility
1.000
Positive impact
1.000
Negative impact
0.000
Mechanical evidence

  1. Source ability 36a8ceb1-148b-41e0-a7bf-ceb879bf08e7:0:0:abilities-8:0ffd7d19f09af5fbaf8ebe3fffce103797f64e2210309e32aed2e2c820f7a0fa supplies the exact mana input used by target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce. This grants cast (hand → stack).

    enables · mana · impact 1.000 · conditional

    Conditions: target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: 36a8ceb1-148b-41e0-a7bf-ceb879bf08e7:0:0:abilities-8:0ffd7d19f09af5fbaf8ebe3fffce103797f64e2210309e32aed2e2c820f7a0fa

    Destroy target artifact. Add {G}{G}{G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

A-Base Camp

Conditional loves

Land · Mana cost: Unavailable

Perspective
same controller
Status
conditional
Signed compatibility
0.500
Positive impact
0.500
Negative impact
0.000
Mechanical evidence

  1. Source ability fb6b271f-689e-46e0-97b8-044aaf582898:0:0:abilities-8:513612f4f60066b1c9b374316f1e130fe448e4efbbab869507603d0b75a453f5 supplies mana for part of target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce's setup; remaining prerequisites are listed as conditions. This grants cast (hand → stack).

    enables · mana · impact 0.500 · conditional

    Conditions: missing prerequisite: requires mana (g); source supplies 1 mana for 2 total required; the same mana cannot cover multiple prerequisites; target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: fb6b271f-689e-46e0-97b8-044aaf582898:0:0:abilities-8:513612f4f60066b1c9b374316f1e130fe448e4efbbab869507603d0b75a453f5

    {T}: Add {C}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

A-Bretagard Stronghold

Conditional loves

Land · Mana cost: Unavailable

Perspective
same controller
Status
conditional
Signed compatibility
0.500
Positive impact
0.500
Negative impact
0.000
Mechanical evidence

  1. Source ability 34b9e436-7db0-4820-a780-46cc0bd901bc:0:1:abilities-8:4476bc084a459ae000662558673c45736ab74f1e3ec7eb15eb9ec42608701328 supplies mana for part of target ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce's setup; remaining prerequisites are listed as conditions. This grants cast (hand → stack).

    enables · mana · impact 0.500 · conditional

    Conditions: source supplies 1 mana for 2 total required; the same mana cannot cover multiple prerequisites; target ability requires timing=instant; target resource requires action_kind=noncreature_spell

    Source evidence

    Source ability: 34b9e436-7db0-4820-a780-46cc0bd901bc:0:1:abilities-8:4476bc084a459ae000662558673c45736ab74f1e3ec7eb15eb9ec42608701328

    {T}: Add {G}.

    Target ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

A-Dragon's Rage Channeler

Conditional loves

Creature — Human Shaman · Mana cost: {R}

Perspective
same controller
Status
conditional
Signed compatibility
0.500
Positive impact
0.500
Negative impact
0.000
Mechanical evidence

  1. Source ability 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce supplies the exact noncreature_cast input used by target ability 0fe21567-badf-4e55-98bb-cc014fef2eb0:0:0:abilities-8:3a965fea7419b9757b8d012321bcb7faba768330abc67861cc50211c30baf3ca. This grants cast (hand → stack).

    amplifies · noncreature_cast · impact 0.500 · conditional

    Conditions: source ability requires timing=instant

    Source evidence

    Source ability: 682eb224-cab4-4829-810b-72e63a9ceb5d:0:cast:abilities-8:8b28c2ad6de45faec3237c352d65c92e25315545d9c231faf784b0df5373bcce

    Cast River Heralds' Boon

    Target ability: 0fe21567-badf-4e55-98bb-cc014fef2eb0:0:0:abilities-8:3a965fea7419b9757b8d012321bcb7faba768330abc67861cc50211c30baf3ca

    Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Potential opposing interactions

Evaluated 0 of 0 indexed candidates. No evaluated candidates were returned. This is not evidence of neutrality.

No relationship candidates are available for this view.

Printings
SetLanguageCollectorReleasedRarityPrice
Ixalanko2042017-09-29common—
Ixalanit2042017-09-29common—
Ixalanfr2042017-09-29common—
Ixalanru2042017-09-29common—
Ixalanzht2042017-09-29common—
Ixalande2042017-09-29common—
Ixalanpt2042017-09-29common—
Ixalanes2042017-09-29common—
Ixalanzhs2042017-09-29common—
Ixalanen2042017-09-29common$0.07
Ixalanja2042017-09-29common—