Source is No Longer in the Realm

If the source of a storyline event was in the realm but then leaves the realm before the event resolves, the event is ignored and does not actually resolve. Simply proceed to the next event on the storyline. Continuing from the example in 'Multiple Simultaneous Triggers' above, the Apprentice Wizard entered the realm on the surface of a flooded Bottomless Pit with a Mariner's Curse. We have three events on the storyline, as follows: Mariner's Curse ability (Submerge Apprentice Wizard and return to hand) Apprentice Wizard Genesis (Draw a spell) Bottomless Pit ability (Kill Apprentice Wizard since it doesn't have Airborne) The Mariner's Curse resolves, submerging the Apprentice Wizard (who dies underwater without the submerge ability), and the Mariner's Curse returns to your hand. Now, the storyline looks like: DONE: Mariner's Curse ability Apprentice Wizard Genesis (Draw a spell) Bottomless Pit ability (Kill Apprentice Wizard since it doesn't have Airborne) Now, the Apprentice Wizard's Genesis ability tries to resolve, but the Apprentice Wizard is no longer in the realm. The genesis ability cannot resolve and is ignored. I do not draw a spell. Now, the storyline looks like: DONE: Mariner's Curse ability IGNORED: Apprentice Wizard Genesis Bottomless Pit ability (Kill Apprentice Wizard since it doesn't have Airborne) The Bottomless Pit ability resolves. It tries to kill the Apprentice Wizard and fails, since the Apprentice Wizard is already dead. If a specific event has started to resolve and got split up (per the Splitting Events on the Storyline rules), that event will continue to resolve even if the source leaves the realm.