Soul Echo, Soul Conduit, and Cavern Harpy

Prerequisites

• Soul Echo on the battlefield
• Soul Conduit on the battlefield
• Cavern Harpy on the battlefield
• available

Steps

1. Activate Cavern Harpy by paying 1 life
2. Repeat step 1 until you have zero life
3. Resolve the last Cavern Harpy trigger, returning it to your hand
4. The remaining Cavern Harpy triggers fizzle
5. Activate Soul Conduit by paying and tapping it, exchanging your life total with an opponent's
6. The opponent loses the game due to having zero life
7. You may repeat this on each of your turns

Results

• Target player loses the game on each of your turns