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.
So under the new SE rules Sasada can't use his ability: "OPEN: Bow one of your ports or region cards: straighten Sasada" to straighten himself.
But, is there anything in the rules that prevent me from using the ability on one of my unbowed Sasadas in play to straighten a different bowed Sasada?
So under the new SE rules Sasada can't use his ability: "OPEN: Bow one of your ports or region cards: straighten Sasada" to straighten himself.
But, is there anything in the rules that prevent me from using the ability on one of my unbowed Sasadas in play to straighten a different bowed Sasada?
Sasada still works like he always did.
The only effect of Sasada's ability is to straighten its own card (not other cards named Sasada). The only time this action can produce any effect that legally resolves is when Sasada is bowed. Ergo, the card's text must override the general rule preventing you from using abilities on bowed cards.
This is one of the (hopefully) rare times where a card invokes Cardinal Rule #1 implicitly rather than explicitly.