Ultra Juggernaut

If this creature is blocked by another creature and
isn't killed, the controller of that creature takes 3 damage.
{b}{b}{b/r}{3}, {t}: Target creature an opponent
controls takes 4 damage. That opponent and every other creature they control take 2 damage.
This 10-ton ball of pure destruction can travel miles before splitting into multiple regular juggernaut balls for brutal damage to everything in the area.