
MenaceMenaceCan't be blocked except by two or more creatures., prowessprowessWhenever you cast a noncreature spell, this creature gets +1/+1 until end of turn. (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Other Allies you control have menacemenaceCan't be blocked except by two or more creatures. and prowessprowessWhenever you cast a noncreature spell, this creature gets +1/+1 until end of turn..
Whenever you cast a noncreature spell, create a 1/1 white Ally creature token.
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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.