This clever loop turns Anti-Venom, Horrifying Healer into a self-contained damage machine by feeding its activated ability through Agatha's Soul Cauldron. With Deathbringer Thoctar exiled inside the Cauldron and a +1/+1 counter on Anti-Venom, the Cauldron grants Anti-Venom the ability to fling damage by removing counters, while Ozolith, the Shattered Spire ensures that every time damage is prevented and replaced with counters, you generate a net surplus of growth. Because Anti-Venom can target itself to trigger its own damage-prevention replacement effect—amplified by Ozolith, the Shattered Spire—you can endlessly cycle between fueling the borrowed Deathbringer Thoctar ability and stacking up more +1/+1 counters to deal infinite damage to any target.