Jon Irenicus, Shattered One | Gorilla Pack

Cards

At the beginning of your end step,
Jon Irenicus triggers, giving control of
Gorilla Pack to an opponent who controls no Forests.
When
Gorilla Pack's controller controls no Forests,
Gorilla Pack triggers, causing them to sacrifice it.
However,
Gorilla Pack cannot be sacrificed due to its ability.
Gorilla Pack triggers again, creating a mandatory infinite loop that causes the game to end in a draw.