Spirit Caller's Effigy

Defender (This creature can't attack.)
Each creature card in your hand has evoke. The evoke cost is equal to {2} less than its mana cost. (You may cast it for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)
Shamans often find the art of spirit calling to be easier than expected, as spirits yearn for nothing more than even a second's worth of existence.