Vacuus, Faceless Destruction

Indestructible, Reckoning(If this would leave the battlefield, instead put it on the top of your library.)
At the beginning of each opponents upkeep, that
player exiles a creature they control. Vacuus,
Faceless Destruction gains +1/+1 and Annihilator 1
for each creature opponents own in exile.
Nunc mors factus sum, mundi destructor.