Sauron, Lord of the Rings

Double strike, Trample, Menace, Vigilance
If on the battlefield, Barad-dur can only be transformed by paying Saurons mana cost minus
the already paid costs for Barad-dur. As soon as
Sauron's ring is unequipped, he transforms back.
The mana costs only rise for this form.
"Sauron desired to be a God-King, because of his admiration of Strength he had become
a follower of Morgoth and fell with him down into the depths of evil."-Tolkien