@will-o-wisp technically neurotoxin is a form of poison so 🤷♂️
You're right on something.Neurotoxin doesnt block his healing, and ability accuracy wont disable his heal block immunity. But it can lower his chance to proc primal fury, which will also prevent the healing from activating.But when fightning him, The Champion has more than 100% abikity accuracy, meaning you will need something like 5/6 neurotoxins to fully reduce his ability accuracy