Activate only when 1 monster with 1500 or less ATK is Special Summoned to your side of the field while your opponent controls a face-up monster(s). Special Summon all cards with the same name as the Summoned monster from your hand, Deck, and Graveyard in face-up Attack Position. Your opponent selects 1 face-up monster they control and Special Summons all cards with that same name from their hand, Deck, and Graveyard.
Atom 1.0
