Lissandra, the Ice Witch

Mage ({2}, {t}: This creature deals damage equal to
the number of AP counters on it plus one to target
creature you don't control. Active this ability only
during combat phase.)
{2}, {t}: Tap target creature you don't control.
{2}, {ut}: Return Lissandra to your hand. Scry 2.
"I will bury the world in ice."