If you control exactly 3 non-Token monsters with the same name, and no other monsters: You can add 3 monsters with the same name as each other from your Deck to your hand. For the rest of this turn after this card resolves, you cannot Normal Summon/Set or Special Summon monsters with the added monsters' name, nor activate their monster effects. You can only activate 1 "Subsurface Stage Divers" per turn.