Dictum of Mandos

Devoid (This card has no color.)
When Dictum of Mandos enters the battlefield,
exile target creature for as long as Dictum of
Mandos remains on the battlefield.
Spells with the same name as a card exiled by
Dictum of Mandos can't be cast.
"None who enter shall pass back through; until
Arda has changed, and been made anew."