Voidshade Hybrid

Defender, trample
As an additional cost to cast this spell, sacrifice
four creatures you don't own.
As long as you control a Void Shard with four or
more catastrophe counters on it, Voidshade
Hybrid can attack as though it didn't have
defender and has indestructible and annihilator
X, where X is the number of Void Shards you
control.