Odgruk, Oubliette Overseer

When Odgruk, Oubliette Overseer enters the
battlefield, target creature an opponent controls
phases out until Odgruk, Oubliette Overseer
leaves the battlefield. Tap that creature as it
phases in this way.
(Auras and Equipment phase out with it. While
permanents are phased out, they're treated as
though they don't exist.)
"Ah, you again." - Odgruk