Jon Irenicus, Shattered One + Bog Serpent

Jon Irenicus, Shattered One

Bog Serpent

How it works

1. At the beginning of your end step, Jon Irenicus triggers, causing an opponent who controls no Swamps to gain control of Bog Serpent.
2. Bog Serpent triggers, causing the opponent to sacrifice it.
3. However, Bog Serpent cannot be sacrificed due to its ability granted by Jon Irenicus.
4. Bog Serpent triggers again, creating a mandatory infinite loop that causes the game to end in a draw.