Isamaru, Hound of Konda K-9, Mark I Karlov Watchdog Karplusan Hound Karvanista, Loyal Lupari Komainu Battle Armor Kroxa and Kunoros Kunoros, Hound of Athreos Labro Bot Lava Hounds Leashling Lightning Hounds Lockjaw, Slobbering Teleporter Longshot Squad Loyal Warhound Lucky the Pizza Dog Mad Dog Mischievous Pup Mogis's Warhound Mongrel Pack Monstrous Hound Moon-Eating Dog Mortis Dogs Mossdog Mowu, Loyal Companion Mushroom Watchdogs Pack Leader Pack Mastiff Pako, Arcane Retriever Patrol Hound Pet Avengers Phantom Whelp Phelia, Exuberant Shepherd Plague Dogs Pyre Hound Rakdos Ragemutt Rambunctious Mutt Rescue Retriever Resolute Watchdog Rex, Cyber-Hound Rin and Seri, Inseparable Salt Road Ambushers Sandsteppe Scavenger Scrapwork Mutt Scrapyard Mongrel Selfless Savior Slumbering Cerberus Snarling Gorehound Snow Hound Spirited Companion Sterling Hound Stonebinder's Familiar Summon: G.F

You can even use this card politically to enable an opponent to get through for damage on a player thats starting to become a threat to the rest of the table
Card Set(s) -ONE PIECE CARD THE BEST- [PRB-01] CARD VIEW OP03-094 | UC | EVENT Air Door Block icon 1 Effect [Main] If your Leader's type includes "CP", look at 5 cards from the top of your deck
They're not a requirement for a good deck, but mythic rares can be the bombs and strategy-accelerating cards you need