Yeah, Steve-o - how could you POSSIBLY have missed the stealth errata on Ancestor Spirits? After all, it's been in all the FAQs and they've issued an updated card... oh wait, no. It's on an obscure thread on the BGG site.
My post concerning Ancestor Spirits was also made close to a year ago.
But please, let's not let the fact that Marc necroposted a thread from ages ago stop people from pointing out how FFG has since issued new clarifications that might contradict me.
FWIW, even if FFG has since ruled that AS can affect multiple monsters/heroes, I personally disagree with that ruling. The language on that card (and on this Bard skill) seem fairly clear to me that it only affects one figure. I guess I'll be calling that a house rule from now on.
But both cards uses the same words: "when a hero" and "that hero". I don't see why it has different targets
Perhaps one of us has misunderstood something. Both Ancestor Spirits and Concentration affect a single figure (IMHO.) Healing Rain is the skill from my age-old discussion that affects multiple heroes. The question back then was about how Healing Rain and Ancestor Spirits interact. I said HR would do its thing for everyone and AS would add on to one hero, which is exactly what I was just saying today about Concentration adding on to a multi-heal ability (like HR, for example.)
Also note, as Griton points out, that FFG has apparently since issued a clarification about Ancestor Spirits in the unofficial FAQ which I was previously unaware of. If you choose to go with that ruling, then I would agree that Concentration should work the same way, for consistency if nothing else.
Edited by Steve-O, 02 April 2014 - 08:34 PM.