Bifi, Architect of Illusions

Companion - No cards in your library have effects
or abilities that target an opponent or a permanent
or spell an opponent controls.

When Bifi enters the battlefield create a token
that's a copy of target nontoken permanent
other than Bifi.That token is an Illusion Wall in addition to its other types if it's a creature.
{t}, sacrifice target Illusion: return Bifi to his
owner's hand.