​​ Shield trigger (When this spell is put into your hand from your shield zone , you may cast it immediately for no cost .)

■ You may choose a creature in the battle zone and put it into its owner 's mana zone . If you do, choose a non- evolution creature in that player 's mana zone that costs the same as or less than the number of cards in that mana zone . That player puts that creature into the battle zone .