Lurebound Scarecrow and Assault Suit on the battlefield.
Assault Suit attached to Lurebound Scarecrow.
A player controls no permanents of the color chosen by Lurebound Scarecrow.
Steps
At the beginning of the upkeep of the player who controls no permanents of the chosen color, Assault Suit triggers, causing that player to gain control of Lurebound Scarecrow.
Lurebound Scarecrow triggers, causing them to sacrifice it.
However, Lurebound Scarecrow cannot be sacrificed due to Assault Suit.
Lurebound Scarecrow triggers again, creating a mandatory infinite loop that causes the game to end in a draw.