Anti-Venom, Horrifying Healer, Agatha's Soul Cauldron, Deathbringer Thoctar, and Taii Wakeen, Perfect Shot

Prerequisites

• Anti-Venom, Horrifying Healer on the battlefield
• Agatha's Soul Cauldron on the battlefield
• Deathbringer Thoctar in exile
• Taii Wakeen, Perfect Shot on the battlefield

Steps

1. Activate Taii Wakeen by paying and tapping it, increasing the amount of damage sources you control deal this turn by one
2. Activate Anti-Venom using Deathbringer Thoctar's ability by removing a +1/+1 counter from it, targeting itself and putting two +1/+1 counters on it due to its replacement effect and Taii Wakeen
3. Activate Anti-Venom using Deathbringer Thoctar's ability by removing a +1/+1 counter from it, dealing 1 damage to any target
4. Repeat from step 2

Results

• Infinite damage
• Infinite +1/+1 counters on a creature