Poseidra Abyss, the Atlantean Dragon Lord – Ultra Rare

3 Level 7 monstersOnce per turn, you can also Xyz Summon «Poseidra Abyss, the Atlantean Dragon Lord» by using 1 «Atlantean» or «Mermail» Xyz Monster you control (transfer its materials to this card). Once per turn: You can detach 2 materials from this card, then send 1 WATER monster from your hand or Deck to the GY; return up to 3 cards your opponent controls to the hand. If this Xyz Summoned card is sent to the GY: You can discard 1 card to the GY; Special Summon 3 Level 3 or lower Fish, Sea Serpent, and/or Aqua monsters from your hand and/or GY.