Effect
You can discard 3 other WATER monsters to the GY; Special Summon this card from your hand. When Summoned this way: You can target 1 "Abyss-" Spell/Trap in your GY; add that target to your hand. You can Tribute 1 other Attack Position "Mermail" monster; send 1 random card from your opponent's hand to the GY. You can only use this effect of "Mermail Abyssleed" once per turn.
The monster effect "During your Main Phase: You can discard 3 other WATER monsters from your hand; Special Summon this card from your hand" is an Ignition Effect that activates in the hand. (It does not target.)
When activating the monster effect "Special Summon this card from your hand", you discard 3 WATER monsters other than "Mermail Abyssteus" from your hand to the Graveyard as the cost.
The monster effect "When this card is Special Summoned by this effect: You can target 1 'Abyss' Spell/Trap Card in your Graveyard; add it to your hand" is a Trigger Effect. (It targets 1 "Abyss" Spell/Trap Card in your Graveyard.)
The monster effect "You can Tribute 1 other face-up Attack Position 'Mermail' monster; your opponent discards 1 random card" is an Ignition Effect. (It does not target.)
When activating the monster effect "your opponent discards 1 random card", you Tribute 1 face-up Attack Position "Mermail" monster other than "Mermail Abyssteus" from your Monster Zone as the cost.
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