Bowser, Unlikely Ally

Whenever an Aura or Equipment enters the battlefield under your control, create a 2/2 red
Koopa Troopa creature token with menace.
At the beginning of your end step, put a +1/+1
counter on each modified creature you control.
(Equipment, Power Ups, Auras you control, and
counters are modifications.)
"I'm lightning in a bottle! I'm an earthquake
in a can!"