Sishah, Vacated Soul

Devoid, Deathtouch, Flying, Lifelink, Ward X
When Sishah enters the battlefield, create X 1/1
black and white spirt creature tokens.
Sishah's toughness is equal to the number of
spirits you control.
{w/u}{w/u}{u/b}{u/b}: Swap Sishah's power and toughness
until end of turn.