King Bowser

: Passive: When King Bowser's loyalty reaches zero, exile it, then return it to the battlefield under its owner's control transformed.
+1: Blockbuilder - Create a colorless Mario Block artifact token. Until your next turn, damage dealt to King Bowser is reduced by 50%, rounded down.
-5: Breathing Fireballs - King Bowser deals 3 damage to each creature each opponent controls.