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

Draw the game

Jon Irenicus, Shattered One

Manta Ray

If needed, give control of Manta Ray to an opponent who controls no Islands.
When Manta Ray's controller controls no Islands, Manta Ray triggers, causing them to sacrifice it.
However, Manta Ray cannot be sacrificed due to Assault Suit.
Manta Ray triggers again, creating a mandatory infinite loop that causes the game to end in a draw.

Combos with "Manta Ray"