Arrival of the Slivers

Create 5 1/1 colorless sliver creature tokens. Arrival of the Slivers deals X damage divided evenly among all non-sliver creatures all players control, where X is the number of Slivers you control. If 4 or more damage was dealt to all non-Sliver creatures, exile Arrival of the Slivers from your graveyard and return it to the battlefield transformed.

"I knew that this army would be followed by something worse." - Angelis, Honored Seraph