I suspect this wont be quite good enough, but it does have some good properties: a lot of cards you want to hit like Sheoldred you still get a meaningful impact even if tapped
Pokemon Chilling Reign card list & price guide
If you tap four untapped Persistent Petitioners, it will cause your opponent to mill 12 cards
Stabilizers & spot answers: Windborn Muse, Wall of Reverence, Stroke of Midnight, Riot Control, Dramatic Rescue
The deck is essentially Mono Black Control with a Spellslinger twist, running a ton of instants and controlling the board with removal spells like Snuff Out, Liliana's Triumph, and Force of Despair, drawing cards with Dark Bargain, Necrologia, and Wretched Confluence, generating a ton of mana with cards like Crypt Ghast, Cabal Coffers, and Nirkana Revenant, and eventually winning the game by stealing opposing creatures with Thrilling Encore or going for the Chain of Smog + Professor Onyx combo
I honestly cant say how the AI involved in this process compares to Hearthstones - which has improved a lot over the last season or two - but it didnt do anything too obviously silly