Rule of Location + Ward of Air (L5R rules board)

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, 8 January 2014

I we ran into this and weren't sure how to resolve this last night. My Search-Fu didn't turn up anything so I apologize if this is a rehash.

Does Ward of Air require the Personality with Ward of Air to actually be at the current battlefield? This is in relation to if the personality with Ward of Air actually has the Air trait. I ask because the trait doesn't specify at the current battlefield with the IE wording and it is a trait so I'm assuming no interrupt restrictions either. Therefore the scenario is:

1) I have a personality at the battlefield and an Air Shugenja at home with Ward of Air. 2) My opponent does an action and kills my personality at the battlefield

Can I use Ward of Air on the Air Shugenja at home to negate the destruction?

Trait: Before this Shugenja, or any personality if the Shugenja is air, is destroyed by a battle action, you may destroy this spell to negate it.

Cheers!

A player, 8 January 2014

Traits don't follow the Rule of Location, you may trigger Ward of Air's trait with an Air Shugenja safely from home and protect your Personality at the battlefield.