can Akodo Shigo use his ability when he isn't opposed only to get +2F?
Akodo Shigo
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.
can Akodo Shigo use his ability when he isn't opposed only to get +2F?
No. "Target enemy unit" is a mandatory target.
http://rules.l5r.com/CE_Abilities_and_a ... _targeting: "An action’s required targets consist of anything that is targeted by the player taking the action in the action's constraints or effects" (emphasis added).
Also in the FAQ: http://rules.l5r.com/CE_FAQ#What_are_re ... targets.3F
And just because I love it so: