Summoned Skull

Tribute 6 (You may sacrifice non-token creatures
with total converted mana cost six or greater rather
than paying this creature's mana cost.)
Vigilance, Trample
{p/b}{p/b}{p/b}{p/b}{p/b}: Destroy all creatures target
opponent controls. This ability can only be
activated as a sorcery once per turn.
Limited 1