Mermail Abyssteus (UTR) [CBLZ-EN083] Ultimate Rare

You can discard 1 other WATER monster to the Graveyard; Special Summon this card from your hand. When you do: 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.