Effect
You can discard 1 other WATER monster to the GY; Special Summon this card from your hand. When Summoned this way: You can 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.
The monster effect "①: You can discard 1 other WATER monster from your hand to the GY; Special Summon this card from your hand" is an Ignition Effect that activates in the hand. (This effect does not target.)
When activating the monster effect "Special Summon this card from your hand," you discard 1 WATER monster from your hand to the GY as a cost.
The monster effect "②: If this card is Special Summoned by the effect of ①: You can add 1 Level 4 or lower "Mermail" monster from your Deck to your hand" is a Trigger Effect. (This effect does not target.)
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