Time Scepter

Equipped creature has "{t} Exile this creature.
Choose a creature with the same mana value from
your graveyard and put it on the battlefield tapped
under your control. Attach Time Scepter to that creature."
Equip {4}
Well, relax, April. It's just your, uh, ordinary
time travel equal-mass-displacement kind of thing.
— Donatello