Vile Humor

As an additional cost to cast this spell, you may
have target opponent may put 2 Taint counters
distributed among the permanents on the
battlefield. If you pay this cost, target creature
loses Indestructible until end of turn.
Destroy target Creature.
Among the corrupt, even those who fancy themselves
sacrosanct can be slain by another corrupted. Often
on a whim or as a joke. Corruption either can not
or will not protect one against itself or its own."