Evra, Halcyon Witness, Soul Conduit, Humble, and Phyrexian Unlife

Prerequisites

• Evra, Halcyon Witness on the battlefield
• Soul Conduit on the battlefield
• Humble in hand
• Phyrexian Unlife on the battlefield
• available

Steps

1. Activate Evra by paying
2. Holding priority, cast Humble by paying , causing Evra to have base power and toughness 0/1 until end of turn
3. Resolve Evra's ability, swapping your life total with Evra's power
4. Activate Soul of Conduit by paying and tapping it, swapping your life total with an opponent's
5. The opponent loses the game due to having zero life

Results

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