Dogmeat, Ever Loyal Interceptor, Shadow's Hound Isamaru, Hound of Konda K-9, Mark I Karvanista, Loyal Lupari Kroxa and Kunoros Kunoros, Hound of Athreos Lockjaw, Slobbering Teleporter Lucky the Pizza Dog Mowu, Loyal Companion Pako, Arcane Retriever Phelia, Exuberant Shepherd Rex, Cyber-Hound Rin and Seri, Inseparable Tesak, Judith's Hellhound Yoshimaru, Ever Faithful
Scions Secretary Whenever an opponent draws a card, if it isnt that players turn, create a tapped Treasure token
Switching out your Pokemon will turn the Active Pokemon into a Benched one and since Special Effects can only affect Active Pokemon, then you heal their status effect
This gives you enter the battlefield and death triggers, from which there are myriad ways to win the game
Even Wilhelt sacrifices its army to draw you cards
Up to this point, there seems to be two different versions of Discover combo