mtg cards like silence (Heavily Played) – Fun Box Monster Emporium Sacrifice Aura of Silence Card mechanics similar to Hearthstone's

UB is a strange color identity for a sea creature deck, but Runo presents a fun mini-game to get it flipped, and Krothuss, Lord of the Deep is one of the best sea creature payoffs you could ask for

Oh, and he also makes for a neat Commander deck

Ainok Tracker Akoum Hellhound Arcbound Tracker Ashmouth Hound Blazing Hellhound Blood Hound Bolt Hound Carnival Barker Chandra's Magmutt Deer-Dog Dogmeat, Ever Loyal Edgewall Pack Enduring Courage Equilibrium Adept Fiery Hellhound Goldhound Hellfire Mongrel Hound of Griselbrand Igneous Cur Karplusan Hound Komainu Battle Armor Kroxa and Kunoros Lava Hounds Lightning Hounds Mad Dog Mogis's Warhound Monstrous Hound Pack Mastiff Pako, Arcane Retriever Pyre Hound Rakdos Ragemutt Rin and Seri, Inseparable Scrapyard Mongrel Slumbering Cerberus Summon: G.F

Eisenhorn doesnt look bad to me overall, just a bit clunky

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That is, it doesn't matter how long it's been a creature, just how long it's been on the battlefield