I also love Treasure Nabber here as well, as you can just sacrifice whatever you steal with it
Cards like Stasis, Winter Orb, Back to Basics, and Hokori, Dust Drinker make up the core of this strategy by bringing the game to a complete crawl
Its not impossible to deal with, but even one hit with this thing is going to change the rest of the game
There is no need to say more, and you will see just how powerful this is by looking at the cards it can remove: Kroxa, Titan of Death's Hunger Valki, God of Lies The Ozolith Scourge of the Skyclaves Shadowspear Thassa's Oracle Steelbane Hydra Fiend Artisan Tome of Legends Underworld Breach Robber of the Rich and many, many others
This means your strategy is less about pinning 10 poison on one player before moving on to the next, and more about making sure those first three poison counters land on each opponent