The Power Stone

Infinity stone (Indestructible and at the beginning of
your upkeep, lose 2 life unless you control a card
named The Infinity Gauntlet)
{4}{p/w}{t} Exile all Creatures.
{5}{p/w}{t} Destroy all nonland permanents target
player controls.
Whenever The Power Stone becomes tapped, it
doesn't untap during it's controller's next
untap step.