Sauron, Bane of Middle-Earth

At the beginning of each upkeep, that player puts a ring aura token attached to a creature they control with "Equipped creature gets +2/+2, Double Strike and becomes a Wraith in addition to their other types. Vanishing 3."

Whenever the last Vanishing counter is removed from a creature, exile it and return it to the battlefield under your control.

Wraith, Orc and Goblin creatures you control have Deathtouch and Double Strike