Outrider en-Kor, Task Force, and Huatli, the Sun's Heart

Prerequisites

• Outrider en-Kor on the battlefield
• Task Force on the battlefield
• Huatli, the Sun's Heart on the battlefield
• Hualti has at least three loyalty counters on it

Steps

1. Activate Outrider en-Kor by paying , targeting Task Force
2. Task Force triggers, giving itself +0/+3 until end of turn
3. Resolve Outrider en-Kor's ability, causing the next one damage dealt to Outrider en-Kor this turn to be dealt to Task Force instead
4. Repeat an arbitrarily large number of times
5. Activate Hualti by removing three loyalty counters from it, causing you to gain life equal to Task Force's toughness

Results

• Infinite lifegain