Gadarla, the Mystery Dust Kaiju

You can Special Summon this card (from your hand) to your opponent's field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. Once per turn (Quick Effect): You can remove 3 Kaiju Counters from anywhere on the field; the ATK/DEF of all other monsters on the field become halved.