RD/KP16-JP021 Abysslayer Quintiamat
Level 7 DARK Sea Serpent Effect Monster
ATK 2500
DEF 0
[REQUIREMENT] Shuffle up to 3 monsters from your GY into your Deck, including a Sea Serpent Maximum Monster(s).
[EFFECT] Draw 1 card, then, you can excavate the top 5 cards of your Deck and reveal them. You can choose up to 3 Level 7 or higher Sea Serpent monsters among them and add them to the hand. Place the remainder on the bottom of the Deck in any order.

RD/KP16-JP052 Abysskite Mapping
Normal Spell Card
This card’s name is treated as “Abysskite Prevent Wall” while in the GY.
[REQUIREMENT] None
[EFFECT] You gain 300 LP x [The number of face-up Sea Serpent monsters you control], then, you can choose 1 “Abysskite Party” in your GY and add it to your hand.

RD/KP16-JP046 Soukyuu no Kaimei Nelkrita (Nelkrita the Skysavior Hadal)
Level 9 DARK Celestial Warrior Fusion Effect Monster
ATK 2800
DEF 2300
Materials: “Seir the Skysavior Knight” + “Lua the Skysavior Angel”
[REQUIREMENT]
[CONTINUOUS EFFECT] Celestial Warrior, Warrior and Fairy monsters you control that are equipped with Equip Spell Cards inflict piercing battle damage.

Note: Ocean + Netherworld, so, either Abyss or Hadal or Depths, as it’s the really dark deeps of the sea. It was suggested I keep it different from Abyss proper.

RD/KP16-JP043 Kachoufuusai no Prophecy Flail (Prophecy Flail the Colors of Nature)
Level 9 WIND Psychic Effect Monster
ATK 2900
DEF 2200
Materials: “Prophecy Phrase the Colors of the Wind” + “Fiddlebadour”
[REQUIREMENT] None
[EFFECT] Choose 1 face-up Level 8 or lower monster your opponent controls and destroy it, then, you can shuffle all monsters from your opponent’s GY into the Deck. If you shuffled, then, this card gains 1200 ATK until the end of the turn, then, draw 1 card.

Note: Imma be real with you chief, “Colors of Flowers, Butterflies and Wind” is real freaking chonky, and it’s basically the same vibe as the concept behind the Bracelet Girls from ARC-V, the various wonders of nature that inspire Japanese poets to write haikus and the like. Brevity is the soul of wit.