Moxx Rocks — Rock Hydra

Creature — Hydra

This creature enters with X +1/+1 countersTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on it. For each 1 damage that would be dealt to this creature, if it has a +1/+1 counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on it, remove a +1/+1 counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) from it and prevent that 1 damage. : Prevent the next 1 damage that would be dealt to this creature this turn. : Put a +1/+1 counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on this creature. ActivateTo activate an activated ability is to put it onto the stack and pay its costs, so that it will eventually resolve and have its effect. Only an object’s controller (or its owner, if it doesn’t have a controller) can activate its activated ability unless the object specifically says otherwise. A player may activate an ability if they have priority. See rule 602, “Activating Activated Abilities.” (CR 701.2) only during your upkeep.

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Commander: LegalModern: Not 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.

Predicted tags are currently unavailable.

Ability classification

Published revision: 482a4a8d-910a-4262-8142-5f79ac2d4159
Catalog cards: 34,605
Classified: 34,605
Complete: 1,684
Partial: 31,626
Unsupported: 1,295

partial Extraction abilities-3

Incomplete card classification: unmodeled effect: This creature enters with X +1/+1 counters on it.; unmodeled effect: For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.; unmodeled effect: Prevent the next 1 damage that would be dealt to this creature this turn.; unmodeled effect: Put a +1/+1 counter on this creature; unmodeled effect: Activate only during your upkeep.

Ability 1

staticunsupported

This creature enters with X +1/+1 counters on it.

Active zone: battlefield
Trigger: Unavailable
Cost: No recorded activation cost.
Requirements: All of: Unsupported condition: unmodeled effect: This creature enters with X +1/+1 counters on it.
Source span: 0–49

Functional categories

delivery.static

Effects

No effect records were extracted.

Incomplete: unmodeled effect: This creature enters with X +1/+1 counters on it.

Source evidence

Source: oracle
Revision: 3f40983ead70e88a606d0757c5bcca30b6da516bcad77585f4dd71265652d21c
Rule: abilities-3
Confidence: Not calibrated

This creature enters with X +1/+1 counters on it.

Ability 2

staticunsupported

For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.

Active zone: battlefield
Trigger: Unavailable
Cost: No recorded activation cost.
Requirements: All of: Unsupported condition: unmodeled effect: For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.
Source span: 50–196

Functional categories

delivery.static

Effects

No effect records were extracted.

Incomplete: unmodeled effect: For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.

Source evidence

Source: oracle
Revision: 3f40983ead70e88a606d0757c5bcca30b6da516bcad77585f4dd71265652d21c
Rule: abilities-3
Confidence: Not calibrated

For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.

Ability 3

activatedpartial

{R}: Prevent the next 1 damage that would be dealt to this creature this turn.

Active zone: battlefield
Trigger: Unavailable
Cost: Mana {R}
Requirements: All of: Unsupported condition: unmodeled effect: Prevent the next 1 damage that would be dealt to this creature this turn.
Source span: 197–275

Functional categories

cadence.repeatable delivery.activated

Effects

payment · immediate

No additional explicit requirement.

requires mana · self R · amount 1
action kind: activated_ability

Incomplete: unmodeled effect: Prevent the next 1 damage that would be dealt to this creature this turn.

Source evidence

Source: oracle
Revision: 3f40983ead70e88a606d0757c5bcca30b6da516bcad77585f4dd71265652d21c
Rule: abilities-3
Confidence: Not calibrated

{R}: Prevent the next 1 damage that would be dealt to this creature this turn.

Ability 4

activatedpartial

{R}{R}{R}: Put a +1/+1 counter on this creature. Activate only during your upkeep.

Active zone: battlefield
Trigger: Unavailable
Cost: Mana {R}{R}{R}
Requirements: All of: Unsupported condition: unmodeled effect: Put a +1/+1 counter on this creature; unmodeled effect: Activate only during your upkeep.
Source span: 276–358

Functional categories

cadence.repeatable delivery.activated

Effects

payment · immediate

No additional explicit requirement.

requires mana · self R · amount 3
action kind: activated_ability

Incomplete: unmodeled effect: Put a +1/+1 counter on this creature; unmodeled effect: Activate only during your upkeep.

Source evidence

Source: oracle
Revision: 3f40983ead70e88a606d0757c5bcca30b6da516bcad77585f4dd71265652d21c
Rule: abilities-3
Confidence: Not calibrated

{R}{R}{R}: Put a +1/+1 counter on this creature. Activate only during your upkeep.

Ability 5

castunsupported

Cast Rock Hydra

Active zone: hand
Trigger: Unavailable
Cost: Mana {X}{R}{R}
Requirements: All of: timing: sorcery; Unsupported condition: unmodeled mana payment {X}{R}{R}
Source span: 0–0

No functional category evidence is published for this ability.

Effects

cast · immediate

No additional explicit requirement.

requires mana · self R · amount 2
action kind: creature_spell
requires mana · self X
All of: action kind: creature_spell; Unsupported condition: unmodeled mana payment {X}
produces creature_cast · self creature · amount 1 · hand → stack
No additional explicit requirement.

Incomplete: unmodeled mana payment {X}{R}{R}

Source evidence

Source: scryfall
Revision: 3f40983ead70e88a606d0757c5bcca30b6da516bcad77585f4dd71265652d21c
Rule: card-type-cast-event
Confidence: Not calibrated

Creature — Hydra

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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 (0.155); 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: 482a4a8d-910a-4262-8142-5f79ac2d4159
Catalog cards: 34,605
Classified: 34,605
Complete: 1,684
Partial: 31,626
Unsupported: 1,295

Scoring revision: relationships-3. Loves, hates, neutral, mixed, conditional, and unknown remain distinct results.

Potential relationships

Evaluated 512 of 1,327 indexed candidates. No evaluated candidates were returned. This is not evidence of neutrality.

No relationship candidates are available for this view.

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

Set	Language	Collector	Released	Rarity	Price
30th Anniversary Edition	en	167	2022-11-28	rare	—
30th Anniversary Edition	en	464	2022-11-28	rare	$76.99
Masters Edition IV	en	133	2011-01-10	rare	—
Summer Magic / Edgar	en	173	1994-06-21	rare	$1.00
Foreign Black Border	fr	173	1994-04-11	rare	—
Foreign Black Border	de	173	1994-04-11	rare	—
Revised Edition	de	173	1994-04-11	rare	—
Foreign Black Border	it	173	1994-04-11	rare	—
Revised Edition	it	173	1994-04-11	rare	—
Revised Edition	fr	173	1994-04-11	rare	—
Revised Edition	en	173	1994-04-11	rare	$3.57
Intl. Collectors' Edition	en	172	1993-12-10	rare	—
Collectors' Edition	en	172	1993-12-10	rare	$8.00
Unlimited Edition	en	172	1993-12-01	rare	$45.99
Limited Edition Beta	en	172	1993-10-04	rare	—
Limited Edition Alpha	en	171	1993-08-05	rare	—

Rock Hydra

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Ability tags

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Creature kinds

Color identity

Mana value

Theme tags

Timing tags

Type tags

Ability classification

Ability 1

Functional categories

Effects

Ability 2

Functional categories

Effects

Ability 3

Functional categories

Effects

Ability 4

Functional categories

Effects

Ability 5

Effects

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Potential opposing interactions