A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Mod edit and nudge: Thread title changed -- please make thread titles descriptive. Also, please use complete card titles. I'm guessing this concerns Shosuro Adeiko, but mods dislike guessing games, as do other players. Thanks!
1. Can Adeiko react off of mountains of the pheonix resolution? Or is it considered to be a delayed effect?
2. Can adeiko react when I use soul jar to bring in a 1 chi dead personality because it is not a delayed effect when they die of the chi loss?
1. Can Adeiko react off of mountains of the pheonix resolution? Or is it considered to be a delayed effect?
Mountains of the Phoenix says, "Mountain Terrain Battle: Before this battle’s resolution, the Attacker and the Defender each choose a unit in their own army; the active player decides who chooses first. Then, destroy the chosen units."
It is played and resolved as a Battle Action during the Combat Segment. The choose-and-destroy effects are applied at a later time "before this battle's resolution" as per the card text. That's a classic example of a Delayed Effect. Shosuro Adeiko can't respond to that destruction.
(Heck, before we got rid of the keyword Mountains of the Phoenix was labeled as a "Delayed Terrain," for a reason. Now we just have one type of Terrain, where sometimes the effects are explicitly delayed.)
2. Can adeiko react when I use soul jar to bring in a 1 chi dead personality because it is not a delayed effect when they die of the chi loss?
Yes, as per the Comprehensive Rules on the source of effects.
In particular, these passages address the issue:
"EXCEPTION 2: A Personality’s destruction for having 0 Chi comes from the effect that last gave the Personality a Chi penalty, or from the rulebook if there was no such effect."
and
"Effects of tokens come from the effect that created them, or from the effect that last transferred them if they have been transferred, not from the tokens themselves."
So the Chi Penalty of the token is one of Soul Jar's effects, and any destruction that causes due to 0 Chi is also an effect of Soul Jar. If you bring a 1F Personality into play with a -1C token then Soul Jar killed him as part of the Limited Action resolving. Adeiko can take her Reaction after the Limited Action is done resolving.