Willian, Cleric of Many Faces

When you cast Willian, Cleric of Many Faces, exile
target creature or Planeswalker. For as long as that
card remains exiled, its owner may play it. A spell
cast this way costs {2} more to cast.

Willian of Many Faces enters as a copy of the exiled
card, and remains so as long as the card remains
exiled.