Age Of Calamity

Finite 8 (This card enters the battlefield with eight
time counters. At the beginning of your upkeep or if
this card would be removed from the battlefield,
remove a counter from it. When there are no
time counters left on it, exile it.)
When Age Of Calamity enters the battlefield,
destroy all permanents which are neither red nor
black. Only red or black creature cards may be
played.