Vampiric Link in hand. All other permanents on the battlefield. Your life total is at least fifty. {B} available.
Deathbringer Thoctar + Vampiric Link + Sunbond
Combo result
Infinite damage. Infinite lifegain. Prerequisites
All permanents on the battlefield. Deathbringer Thoctar enchanted with Vampiric Link and Sunbond. Deathbringer Thoctar has at least 1 +1/+1 counter on it.