Workhorse, Light of Promise, Eldrazi Displacer, and Gray Merchant of Asphodel

Prerequisites

• Workhorse on the battlefield
• Light of Promise on the battlefield
• Eldrazi Displacer on the battlefield
• Gray Merchant of Asphodel on the battlefield
• Light of Promise attached to Workhorse
• Your devotion to black is at least three, or you have at least two opponents
• available

Steps

1. Activate Eldrazi Displacer by paying , blinking Gray Merchant of Asphodel
2. When Gray Merchant of Asphodel enters the battlefield, it triggers, causing each opponent to lose life equal to your devotion to black, and causing you to gain that much life
3. Workhorse triggers, putting at least three +1/+1 counters on itself
4. Activate Workhorse three times by removing three +1/+1 counters from it, adding
5. Repeat
6. If your devotion to black is at least four, or you have at least two opponents, this combo nets infinite +1/+1 counters on Workhorse and colorless mana

Results

• Infinite +1/+1 counters on Workhorse
• Infinite blinking
• Infinite colorless mana
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinite blinking of creatures you control except Eldrazi Displacer