Anivia, Cryophoenix

Flying
If Anivia is tapped opponent's creatures that
attack you get -2/-2.
{t}: tap target creature an opponent controls.
Whenever three or more creatures your opponents control become tapped on the same turn you may
play Anivia from anywhere without paying its
mana cost.
"Poor creatures, so confined by a single life!"
-Anivia