Maiden with Eyes of Blue

Whenever an activated ability activates or
triggered ability triggers that affects this creature,you
may put a "Blue-Eyes" creature from your hand,
library, or graveyard onto the battlefield.

Whenever this creature blocks an opponent's creature, prevent all damage that would be dealt to this creature, tap it, then put a "Blue-Eyes" creature from your hand, library, or graveyard onto the battlefield.

You can only use one effect of each "Maiden with Eyes of Blue" per turn, and only once that tur