Sharkguin!

• Harpie's Feather Duster is Forbidden
• Graceful Charity is Forbidden
• Painful Choice is Forbidden
• Pot of Avarice is Forbidden
• Last Will is Forbidden
• Raigeki is Forbidden
• Pot of Greed is Forbidden
• at least 56 cards first released after HAT's card pool closed (2014-08-13): Abyss Shark, Adamancipator Risen - Dragite, Book of Lunar Eclipse, Buzzsaw Shark, Called by the Grave, Crystal Shark, Cutter Shark, D.D. Post, Dominus Impulse, Dominus Spiral, First Penguin, Forbidden Droplet, Georgius, Swordman of the Ice Barrier, Graydle Dragon, Hydrojet Shark, Ice Barrier, Icejade Gymir Aegirine, Icejade Ran Aegirine, Infinite Impermanence, Jar of Avarice, Junk Sleep, Lantern Shark, Lifeless Leaffish, Lost Wind, Marincess Coral Anemone, Mirror Mage of the Ice Barrier, N.As.H. Knight, Number 4: Stealth Kragen, Penguin Brave, Penguin Cleric, Penguin Ninja, Penguin Squire, Penguin Sword, Pinpoint Landing, Revealer of the Ice Barrier, Royal Penguins Garden, Silent Sea Nettle, Sol and Luna, Solemn Accusation, Songs of the Dominators, Stealth Kragen Spawn, Supreme Sea Mare, Surfacing Big Jaws, Swordsoul Supreme Sovereign - Chengying, The Ice-Bound God, Titanocider, Toadally Awesome, Trap Tracks, Triple Tactics Talent, Triple Tactics Thrust, Unbreakable Xyz Barrier, Valiant Shark Lancer, Veiss Shark, Virtue Stream, White Aura Porpoise, Worldsea Dragon Zealantis

Checked against the HAT format Forbidden & Limited list (April 2014) as of 1 April 2014 and its card pool (no card first released after 13 August 2014), with the sizes and copy limits of a Domain deck.

Not checked: the Deck Master's Domain (which monsters it allows).