
EmergeEmergeYou may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value. (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, creatures you control get +2/+2 and gain trampletrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking. until end of turn.
TrampleTrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking., hastehasteCan attack and use tap abilities the turn it comes under your control.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.