Card Set: Shadows in Valhalla
Rarity: Super Rare
Card Type: Monster
Monster Type: Effect
Level: 7
Attribute: Water
Type: Aqua
ATK/DEF: 1700/2400
Texto (EN): You can discard 1 other WATER monster to the GY; Special Summon this card from your hand. If Summoned this way: Add 1 Level 4 or lower "Mermail" monster from your Deck to your hand. You can only use this effect of "Mermail Abyssteus" once per turn.