The developers seemed to have been made aware of this exploit, because when fighting any opponent who can be fought multiple times, they give you only one deck point
Just because a card is old doesnt mean its valuable
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
There is no limit to how long a card can be on the forbidden and limited list for
AUCTIONEER'S DETERMINATION AND DISCRETION
