Adjudicator of Eternities

Flying
When Adjudicator of Eternities leaves the battlefield, you may pay {u}{u}{u}. If you do,
exile it, then take an extra turn after this one.
If an opponent would take an extra turn and Adjudicator of Eternities is in exile, you may
pay {u}{u}{u}. If you do, put it into your hand
from exile.