Yawgmoth, Thran Physician, Dross Harvester, and Abzan Ascendancy

Prerequisites

• Yawgmoth, Thran Physician on the battlefield
• Dross Harvester on the battlefield
• Abzan Ascendancy on the battlefield

Steps

1. Activate Yawgmoth by paying 1 life and sacrificing the undying creature
2. When the creature dies, Dross Harvester, Abzan Ascendancy and the undying creature's undying ability trigger
3. Resolve the Dross Harvester trigger, causing you to gain 2 life
4. Resolve the Abzan Ascendancy ability, creating a 1/1 Spirit creature token
5. Resolve the undying trigger, returning the creature from your graveyard to the battlefield with a +1/+1 counter on it
6. Resolve the Yawgmoth ability, putting a -1/-1 counter on any creature and drawing a card
7. Activate Yawgmoth by paying 1 life and sacrificing another creature
8. When the creature dies, Dross Harvester triggers, causing you to gain 2 life Resolve the Yawgmoth ability, putting a -1/-1 counter on the undying creature and drawing a card
9. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Near-infinite lifegain
• Near-infinite lifegain triggers