Once the infection takes hold, use Atraxa's end-of-turn proliferate ability, alongside cards like Inexorable Tide and Tekuthal, Inquiry Dominus, to rapidly multiply those counters until they reach the lethal 10
Eirdu, Carrier of Dawn is at worst a Baneslayer Angel of sorts, so everything Isilu, Carrier of Twilight brings is extra
This is a cool idea, one of my favorite MTG cards of all time was co-created by a famous nerd or something: #17 didn't Hearthstone have a bunch of guest artists too
Cards like Blood Petal Celebramt Olivia's Attendants, Dominating Vampire, Welcoming Vampire, and Markov Purifier tend to blur together into one mass of brown and grey, especially when compared to standouts from the style like Cemetery Gatekeeper, Odric Blood Cursed, and Runo Stromkirk
The issue is that this isn't effective removal for its cost and rarely gets you that kill you need
You should draft removal, but you need to adjust how much you prioritize it based on a number of other factors