Misty's Staryu (90/132) [Gym Heroes Unlimited] SM36 Set: Gladiator's Assault Card type:

Set: Gladiator's Assault Card type: Fusion/Effect Monster Rarity: Common Attack: 2200 Defense: 2200 1 Gemini Monster + 1 Gemini Monster All Gemini Monsters on the field are treated as Effect Monsters

Set: Dark Crisis Card type: Effect Monster Rarity: Common Attack: 800 Defense: 1600 The ATK of this card increases by 500 points for every monster on your opponent's side of the field

and can only be activated during you turn

Then activate the appropriate effect

Misty's Staryu (90/132) [Gym Heroes Unlimited] SM36 Set: Gladiator's Assault Card type:Set: Gym Heroes Unlimited Type: Water Rarity: Common Retreat cost: Colorless