Solemnity + Phyrexian Unlife

Solemnity
Phyrexian Unlife

Requires
All permanents on the battlefield.
Steps
  1. While you have zero or less life, Phyrexian Unlife causes all damage to be dealt to you to become infect damage
  2. Solemnity prevents you from getting poison counters due to infect damage
Results
You cannot lose the game due to having 0 or less life. You cannot lose the game due to infect damage.