DelveDelve is a static ability that functions while the spell with delve is on the stack. “Delve” means “For each generic mana in this spell’s total cost, you may exile a card from your graveyard rather than pay that mana.”
The delve ability isn’t an additional or alternative cost and applies only after the total cost of the spell with delve is determined.
Multiple instances of delve on the same spell are redundant. (CR 702.66) (Each card you
exileTo exile an object, move it to the exile zone from wherever it is. See rule 406, “Exile.” (CR 701.13) from your graveyard while casting this spell pays for
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FlyingFlying is an evasion ability.
A creature with flying can’t be blocked except by creatures with flying and/or reach. A creature with flying can block a creature with or without flying. (See rule 509, “Declare Blockers Step,” and rule 702.17, “Reach.”)
Multiple instances of flying on the same creature are redundant. (CR 702.9)
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ExileTo exile an object, move it to the exile zone from wherever it is. See rule 406, “Exile.” (CR 701.13) X cards from your graveyard: Target creature gets -X/-X until end of turn.