Shiva Sisters

Haste, Vigilance
When Shiva Sisters enters the battlefield, place 5
doom tokens on target creature.
On the opponent's End Step, remove one doom
counter.
Once all 5 doom tokens are removed, unless
Shiva Sisters has been destroyed, exile creature,
and place 5 doom counters on another creature.
Once Shiva Sisters has been destroyed, remove all
doom counters.