The Taking of Fort Ticonderoga

(As a Siege enters, choose an opponent to protect it.
You and others can attack it. When it’s defeated,
exile it, then cast it transformed.)

The defending player gains control of a
nonlegendary permanent you control for as
long as they defend this battle. Creatures
attacking this battle are unblockable.

Why in the name of the Great Jehovah and
the Continental Congress! - Ethan Allen