Shard of the Nightbringer, and Enduring Tenacity

Prerequisites

• Shard of the Nightbringer in hand
• Enduring Tenacity on the battlefield
• available

Steps

1. Cast Shard of the Nightbringer by paying
2. Shard of the Nightbringer triggers, causing an opponent to lose half their life total, rounded up, and you to gain life equal to the life lost this way
3. Enduring Tenacity triggers, causing the opponent to lose life equal to the amount of life gained this way
4. The opponent loses the game due to having zero or less life

Results

• Target opponent loses the game
• Infinite lifeloss for target opponent