Ben, the Conjurer

If a spell you control would be exiled, instead
exile it under Ben, the Conjurer. If a source
would allow you to cast a card from exile,
instead cast a spell exiled under Ben, the
Conjurer. If Ben, the Conjurer is a groomsmen
change Ben, the Conjurer's text by removing all
instances of "you control"
{2}, {t}: Ben, the Conjurer becomes a groomsmen
for Ben, the Groom