Splitting Events on the Storyline

As some events are resolving from the storyline, they split up into smaller events. Note that events are only split up as they are resolving, and not when they are added to the storyline. The following are the reasons to split up an event as it resolves from the storyline: A card enters or leaves the realm A card moves in the realm Explicit card text, e.g. 'one at a time' on Firebolts or Tactical Move For example, let's say the realm looks like this: I have an allied at Azuridge Caravan at A. Site R is a Summer River. There's an enemy Lady Iseult at I. I cast Grapple Shot. The storyline will look like this: Grapple Shot effect If there were any cast triggers (e.g. Enchantress, Fenvale Muse, Ring of Morrigan, etc.), those new events interrupt the storyline. Assuming for now we don't have those, Grapple Shot starts to resolve. I choose Azuridge Caravan as the ally, who shoots a projectile, hitting Lady Iseult. At this moment, the Caravan needs to move, so we handle the movement on the storyline. The movement path is set, and now Grapple Shot is split into smaller events, so the storyline now looks like this: DONE: first part of Grapple Shot Azuridge Caravan moves from surface of A to surface of R Azuridge Caravan moves from surface of R to surface of I Remaining part of Grapple Shot The events on the storyline continue to resolve now, and triggered abilities may insert themselves as needed, since new events interrupt the storyline. Another Example of Splitting Events Let's say I use the Druid's ability to play a site and summon Tawny. I tap the Druid and the storyline looks like this: Druid's ability (Play or draw a site. If you played a site and you don't control Tawny, summon her there.) So, the ability starts to resolve and I play my site. As soon as a card enters the realm, the event on the storyline splits, so it now looks like: DONE: first part of Druid's ability (Play or draw a site) Remaining part of Druid's ability (If you played a site and you don't control Tawny, summon her there.) Since new events interrupt the storyline, here's what the storyline would look like if the site had a genesis ability, e.g. Red Desert: DONE: first part of Druid's ability (Play or draw a site) Red Desert's genesis ability Remaining part of Druid's ability (If you played a site and you don't control Tawny, summon her there.) The Red Desert's genesis ability is inserted before the remaining part of the Druid's ability. The Red Desert's genesis ability must resolve before Tawny is summoned. Special Case for Search Effects If an effect causes you to search, then do something that would normally cause a storyline event to be split, and then do something else with the searched cards, you complete the entire search process before splitting the event. For example, if Brother Knight's genesis ability is resolving and I search my deck, then summon the other Brother Knight, normally a card entering the realm would cause the event to split on the storyline. E.g. a Giant Shark or Bottomless Pit might interrupt the rest of the first Brother Knight's genesis ability. But, in fact, you must complete the entire search process and shuffle your deck before allowing any triggered abilities to insert themselves into the storyline. The Giant Shark or Bottomless Pit could absolutely still trigger, but your deck would be shuffled before they do!