Time Stone

Time Stone is an equipment in addition to its
other types.
Indestructible
Equipped creature has
{g}: Scry 5, then untap all permanents you
control
After each phase, if Time Stone is equipped to a
creature, put a destroy counter on that creature.
Then, if that creature has 3 or more destroy
counters on it it loses indestructible. Destroy it.
Equip{3}