The One Ring

Indestructible
Equipped creature has Shroud.
If equipped creature is legendary, it gets +3/+3
During your end step, if equipped creature is not
named Sauron, Lord of Mordor, place a
corruption counter on it (Creatures with
corruption counters get -1/-1 for each counter).
Remove these counters if The One Ring is
removed from equipped creature.
Equip {2}