
TeamworkTeamworkAs an additional cost to cast this spell, you may tap any number of creatures you control with total power 1 or more. 1 (As an additional cost to cast this spell, you may tap any number of creatures you control with total power 1 or more.)
Target creature gains double strike until end of turn. If this spell was cast using teamworkteamworkAs an additional cost to cast this spell, you may tap any number of creatures you control with total power 2 or more., that creature also gains trample until end of turn.
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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.
