Niv Mizzet, Reborn

: When Niv Mizzet, Reforged enters the battlefield, Niv Mizzet, Reforged gains X loyalty counters.
+1: Target creature fights target creature you don't control. If that creature is rainbow, it gets a +2/+0 counter and has flying until end of turn.
-X: Create X 2/2 Spirit tokens with flying onto the battlefield. Deal damage equal to the amount of creatures you control to any target.