Mermail
Yu-Gi-Oh! archetype · 27 cards
Abyssrhine, the Atlantean SpiritROTA-EN017 · Rage of the Abyss · +2 printings
Abyss-scale of CetusCBLZ-EN061 · Cosmo Blazer
Abyss-scale of the KrakenABYR-EN056 · Abyss Rising
Abyss-scale of the MizuchiLTGY-EN064 · Lord of the Tachyon Galaxy · +1 printing
Abyss-scornCBLZ-EN075 · Cosmo Blazer
Abyss-sphereABYR-EN072 · Abyss Rising · +1 printing
Abyss-squallABYR-EN071 · Abyss Rising
Mermail AbyssalaciaDANE-EN094 · Dark Neostorm · +1 printing
Mermail AbyssbalaenLTGY-EN083 · Lord of the Tachyon Galaxy · +2 printings
Mermail AbyssdineCBLZ-EN032 · Cosmo Blazer
Mermail AbyssgaiosABYR-EN046 · Abyss Rising · +8 printings
Mermail AbyssgundeABYR-EN015 · Abyss Rising · +2 printings
Mermail AbysshildeABYR-EN016 · Abyss Rising
Mermail AbyssleedCBLZ-EN034 · Cosmo Blazer · +1 printing
Mermail AbysslindeABYR-EN014 · Abyss Rising · +8 printings
Mermail AbysslungABYR-EN019 · Abyss Rising
Mermail AbyssmanderABYR-EN081 · Abyss Rising
Mermail AbyssmegaloABYR-EN020 · Abyss Rising · +6 printings
Mermail AbyssnereiCIBR-EN028 · Circuit Break · +1 printing
Mermail AbyssnoseCBLZ-EN033 · Cosmo Blazer
Mermail AbyssoceaLTGY-EN030 · Lord of the Tachyon Galaxy · +1 printing
Mermail AbysspikeABYR-EN018 · Abyss Rising · +8 printings
Mermail AbyssteusCBLZ-EN083 · Cosmo Blazer · +10 printings
Mermail AbysstriteCBLZ-EN050 · Cosmo Blazer
Mermail AbyssturgeABYR-EN017 · Abyss Rising
Mermail King - NeptabyssROTA-EN046 · Rage of the Abyss · +4 printings
Mermail Shadow SquadROTA-EN018 · Rage of the Abyss · +2 printings
Archetypes from YGOPRODeck and YAML Yugi (Yugipedia).