Champion of the Path, Malignus, and Collective Inferno

Prerequisites

• Champion of the Path on the battlefield
• Malignus in hand
• Collective Inferno on the battlefield
• available

Steps

1. Cast Malignus by paying
2. It'll enter with power equal to half the highest life total among your opponents, rounded up
3. When Malignus enters, Champion of the Path triggers, causing Malignus to deal damage equal to its power doubled to each opponent due to Collective Inferno

Results

• Each opponent loses the game
• Infinite damage