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

Draw the game

Jon Irenicus, Shattered One

Seasinger

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

Combos with "Seasinger"