Boros Reckoner, and Soul Link

Prerequisites

• Boros Reckoner on the battlefield
• Soul Link on the battlefield
• Soul Link attached to Boros Reckoner
• You have a way to give Boros Reckoner indestructible
• You have a way to deal damage to Boros Reckoner

Steps

1. Give Boros Reckoner indestructible, and then deal damage to Boros Reckoner
2. Boros Reckoner and Soul Link's second ability trigger
3. Resolve the Soul Link trigger, causing you to gain that much life
4. Resolve the Boros Reckoner trigger, dealing that much damage to itself
5. Boros Reckoner and Soul Link's first and second abilities trigger
6. Resolve both Soul Link triggers, causing you to gain life equal to twice the damage dealt
7. Repeat from step 4

Results

• Infinite lifegain
• Infinite lifegain triggers