Gundam Barbatos Lupus Rex

Champion a pilot: Barbatos becomes a 7/3 Mobile Suit artifact creature with flying, trample, vigilance, and haste.

If Mikazuki, Devil of Tekkadan was championed, Barbatos gains Iron Will 2 (If a creature with Iron Will dies in combat, return it to the battlefield. it gets +1/+0 and fights target creature you don't control.)