“Ninjutsu [cost]” means “[Cost], Reveal this card from your hand, Return an unblocked creature you control to its owner’s hand: Put this card into play from your hand tapped and attacking.”
502.43b The card with ninjutsu remains revealed from the time the ability is announced until the ability leaves the stack.
502.43c A ninjutsu ability may be played only while a creature in play is unblocked (see rule 309.2f). The creature with ninjutsu is put into play unblocked. It will be attacking the same player as the creature that was returned to its owner’s hand.
502.44. Epic
502.44a Epic represents both a static ability and a delayed triggered ability. “Epic” means, “For the rest of the game, you can’t play spells,” and “At the beginning of each of your upkeeps, copy this spell except for its epic ability. If the spell has any targets, you may choose new targets for the copy.” See rule 503.10.
502.44b A player can’t play spells once a spell with epic he or she controls resolves, but effects (such as the epic ability itself) can still put copies of spells onto the stack.
502.45. Enchant
502.45a Enchant is a static ability, written “Enchant [permanent or player].” The enchant ability restricts what an Aura spell can target and what an Aura can enchant.
502.45b For more information on Auras, see rule 212.4, “Enchantments.”
502.45c If an Aura has multiple instances of enchant, all of them apply. The Aura’s target must follow the restrictions from all the instances of enchant. The Aura can enchant only permanents or players that match all of its enchant abilities.
502.45d Auras that can enchant a player can target and be attached to players. Such Auras can’t target permanents and can’t be attached to permanents. Rules 212.4d-k apply to an Aura with the “enchant player” or “enchant opponent” ability in relation to players as they normally would for permanents.
502.46. Convoke
502.46a Convoke is a static ability that functions while the spell is on the stack. “Convoke” means “As an additional cost to play this spell, you may tap any number of untapped creatures you control. Each creature tapped this way reduces the cost to play this spell by {1} or by one mana of any of that creature’s colors.” Using the convoke ability follows the rules for paying additional costs in rules 409.1b and 409.1f-h.
502.46b Convoke can’t reduce the cost to play a spell to less than 0.
502.46c Multiple instances of convoke on the same spell are redundant.
502.47. Dredge
502.47a Dredge is a static ability that functions only while the card with dredge is in a player’s graveyard. “Dredge N” means “As long as you have at least N cards in your library, if you would draw a card, you may instead put N cards from the top of your library into your graveyard and return this card from your graveyard to your hand.”
502.47b A player with fewer cards in his or her library than the number required by a dredge ability can’t put any of them into his or her graveyard this way.
502.48. Transmute
502.48a Transmute is an activated ability that functions only while the card with transmute is in a player’s hand. “Transmute [cost]” means “[Cost], Discard this card: Search your library for a card with the same converted mana cost as the discarded card, reveal that card, and put it into your hand. Then shuffle your library. Play this ability only any time you could play a sorcery.”
502.48b Although the transmute ability is playable only if the card is in a player’s hand, it continues to exist while the object is in play and in all other zones. Therefore objects with transmute will be affected by effects that depend on objects having one or more activated abilities.
502.49. Substance
502.49a Substance is a static ability with no effect.
502.50. Bloodthirst
502.50a Bloodthirst is a static ability. “Bloodthirst N” means “If an opponent was dealt damage this turn, this permanent comes into play with N +1/+1 counters on it.”
502.50b “Bloodthirst X” is a special form of bloodthirst. “Bloodthirst X” means “This permanent comes into play with X +1/+1 counters on it, where X is the total damage your opponents have been dealt this turn.”
502.50c If an object has multiple instances of bloodthirst, each applies separately.
502.51. Haunt
502.51a Haunt is a triggered ability. “Haunt” on a permanent means “When this permanent is put into a graveyard from play, remove it from the game haunting target creature.” “Haunt” on an instant or sorcery spell means “When this spell is put into a graveyard during its resolution, remove it from the game haunting target creature.”
502.51b Cards that are in the removed-from-the-game zone as the result of a haunt ability “haunt” the creature targeted by that ability. The phrase “creature it haunts” refers to the object targeted by the haunt ability, regardless of whether or not that object is still a creature.
