- Use "Magical Hats" to bring two "Aquarium" Continuous Spell Cards to your field. When they are destroyed, up to two Aqua-Type monsters from your Graveyard can be Special Summoned, then Synchro Summon this monster during your next turn. Combinations can be used such as:
- "Water Spirit" (Level 1) and "Mermail Abyssteus" (Level 7)
- "Dewdark of the Ice Barrier" (Level 2) and "Aquaactress Arowana"/"Mobius the Frost Monarch" (Level 6)
- "Defender of the Ice Barrier" (Level 3) and "The Great Emperor Penguin" (Level 5)
- "Graydle Slime" (Level 5) and "Graydle Eagle" (Level 3)
- Additionally, one of the "Aquarium" cards can be used to Special Summon another "Graydle Dragon" from your Graveyard.
- If you have "Graydle Slime Jr." and at least two Level 3 "Graydle" monsters in the Graveyard, a single "Salvage" can put you in a position to Synchro Summon this card. Use "Salvage" to retrieve "Graydle Slime Jr." and a Level 3 "Graydle", Normal Summon the former, and use its effect to Special Summon the other two "Graydles" to set up the Synchro Summon of this card.
- Use this card's effect to Special Summon monsters whose effects don't activate on the field, such as "Dupe Frog" or "Ice Hand".
- During your opponent's End Phase, activate "Call of the Atlanteans" to Special Summon 3 Level 3 or lower Sea Serpent-Type monsters from your Graveyard that are also WATER monsters, then Normal Summon an Aqua-Type Tuner monster during your turn, letting your destroy up to 4 cards your opponents controls.
- Aqua-Type Tuner monsters that can be used as Material for this card:
Japanese name Primary type Attribute Level/ Rank ATK DEF Cryomancer of the Ice Barrier 氷結界の術者 Effect Monster WATER 2 1300 0 Defender of the Ice Barrier 氷結界の守護陣 Effect Monster WATER 3 200 1600 Dewdark of the Ice Barrier 氷結界の水影 Effect Monster WATER 2 1200 800 Graydle Slime グレイドル・スライム Effect Monster WATER 5 0 2000 Graydle Slime Jr. グレイドル・スライムＪｒ． Effect Monster WATER 2 0 2000 Water Spirit ウォーター・スピリット Normal Monster WATER 1 400 1200
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