this would be interesting with enchant artifact. does it auto destroy itself by the end of 3 or 5 turns if there are no creatures on the field?EDIT: and does it permanently gain control of a creature or just 1 turn?
Mmmhhh...the concept is intresting...A nice balance should be if the card would sacrifice after its skill activation.
At the end of 5 or 3 turns it will auto destroy. It's just like the sundial.