Champion of the Weird, Butcher Ghoul, and Dross Harvester

Prerequisites

• Champion of the Weird on the battlefield
• Butcher Ghoul on the battlefield
• Dross Harvester on the battlefield

Steps

1. Activate Champion of the Weird by paying 1 life and putting two -1/-1 counters on Butcher Ghoul
2. Butcher Ghoul dies due to having 0 toughness, triggering its undying ability and Dross Harvester Resolve the Dross Harvester trigger, causing you to gain 2 life
3. Resolve the Butcher Ghoul trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
4. Resolve the Champion of the Weird ability from step 1, causing an opponent to blight 2
5. Activate Champion of the Weird by paying 1 life and putting two -1/-1 counters on Butcher Ghoul, causing an opponent to blight 2
6. Repeat

Results

• Infinite -1/-1 counters
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite lifegain triggers
• Infinite sacrifice triggers