Fiery Bombardment

Shuffle all creatures into a pile face up. Starting
with you, each player takes turns removing a card
from the pile. (If there are less then four players,
each player chooses two.) If you control the
creature you took from the pile, return it to your
hand. If not, put it back on the battlefield, it
perpetually gains "At the beginning of your
upkeep, put a -1/-1 counter on target creature
you control.".
Destroy all other creatures in the pile.
Imminent Doom...