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.
A player, 19 April 2011
I just had an question about these type of reactions:
Akodo Senichi Relevant Text: Reaction: Before another player's card's effect destroys one of your Lion Clan Samurai Personalities in Senichi's army, destroy Senichi: Negate the Personality's destruction. Gain 3 Honor.
Hold! Relevant Text: Text Reaction: Before another player's action's resolution, target your unbowed Commander at the current battlefield: Choose one of your Personalities there. Choose whether to negate his bowing or his movement from that action.
Does senichi's reaction last until the end of action or the end of turn? Does hold last until the end of action or the end of turn?
Alex Jones (rules official), 20 April 2011
I just had an question about these type of reactions:
Akodo Senichi Relevant Text: Reaction: Before another player's card's effect destroys one of your Lion Clan Samurai Personalities in Senichi's army, destroy Senichi: Negate the Personality's destruction. Gain 3 Honor.
Hold! Relevant Text: Text Reaction: Before another player's action's resolution, target your unbowed Commander at the current battlefield: Choose one of your Personalities there. Choose whether to negate his bowing or his movement from that action.
Does senichi's reaction last until the end of action or the end of turn? Does hold last until the end of action or the end of turn?
Senichi's reaction creates an instantaneous negation, and which negates only the destruction it's triggered by. Hold!'s reaction isn't triggered by the effect it negates, so it creates an ongoing negation that lasts until the end of the turn.
See Effects, Duration and scope of prevention effects: A prevention effect from a Reaction or triggered trait that was both triggered by, and prevents, another individual effect is instantaneous, and it prevents only that effect. An effect from an action or triggered trait that prevents a type of occurrence (such as all destruction, destruction from a particular player's cards, or destruction from any of an action's effects) is ongoing and lasts until the end of the turn by default.