Artefakt
Immer wenn eine Kreatur ins Spiel kommt und zwei oder mehr andere Kreaturen im Spiel sind, lege diese Kreatur zur Seite. Wenn das Fallgitter das Spiel verlässt, bringe die Kreatur unter der Kontrolle ihres Besitzers ins Spiel.
The creature does enter the battlefield, so any other abilities that trigger on it entering the battlefield trigger. This follows the normal rules for timing triggered abilities: first, the current player puts their abilities on the stack in any order, then each other player in turn order does the same. Portcullis’ own ability is included in this, so it could result in the creature being exiled after some abilities have resolved, but before others.