Volcano Hellion + Lich's Mirror + Gollum, Obsessed Stalker + Oubliette

Prerequisites

• Gollum does not have summoning sickness.
• An opponent cannot block Gollum.

Steps

1. 1Deal combat damage to an opponent using Gollum.
2. 2Cast Oubliette by paying .
3. 3When Oubliette enters the battlefield, it triggers, phasing out Gollum until Oubliette leaves the battlefield.
4. 4Cast Volcano Hellion by paying .
5. 5When Volcano Hellion enters the battlefield, it triggers, dealing an arbitrarily large amount of damage to you and Volcano Hellion.
6. 6Instead of you losing the game as a state-based action, Lich's Mirror causes you to shuffle your hand, graveyard and all permanents you own into your library, causing Gollum to phase in as Oubliette leaves the battlefield, and setting your life total to 20.
7. 7At the beginning of your end step, Gollum triggers, causing an opponent to lose life equal to the life you gained this turn.

Effects

• Infinite lifeloss for target opponent