1 Aqua-Type Tuner + 1 or more non-Tuner monstersWhen this card is Synchro Summoned: You can target cards your opponent controls, up to the number of WATER monsters used for the Synchro Summon of this card; 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 "Graydle Dragon" once per turn.
How to Get
Activates from your Graveyard
Destroys your opponent's Monster Cards / Destroys your opponent's Spell Cards / Destroys your opponent's Trap Cards / Negates the effects of your Effect Monsters