When this card is Synchro Summoned: You can target cards your opponent controls, up to the number of WATER monsters used as Synchro Materials; destroy them. If this card is destroyed by battle or card effect and sent to the Graveyard: You can target 1 other WATER monster in your Graveyard; Special Summon it, but its effects are negated. You can only use each effect of 'Greydle Dragon' once per turn.
Atom 1.0
