Felgana, the Last Fey'ri

When Felgana, the Last Fey'ri enters the battlefield, search your library for a permanent
card, put it into your graveyard, then shuffle.
At the beginning of your end step, if you've cast
three or more Elf and Demon creature spells this
turn, return target permanent card from your graveyard to the battlefield. Then it deals damage
equal to its mana value to any target.
"Only fools question the fate of their kind."