I think they said invisibility would HELP an archmage (I take it that since they're in the same faction and that the OP of that idea said he'd be putting them in the same warband. . .)
Sure, and invisible archmage is sorta nifty--but not really. It lasts till you cast a spell, so if your only objective is to turtle this guy because you're massively up on points or you don't have a hope beyond getting the most out of your swords--it's a pretty lame idea.
Is anybody taking the Phoera seriously? Anybody? Those'r some free victory points sitting there guys.
This piece--if taken in multiples as an exclusive theme--make an octoskull band look downright scary (and no I'm not saying IT would fear an octoskull, I'm saying the average opponent with an average warband here)
The phoera is just one piece that I see the stats and I say--uh oh, I hope this isn't indicative of the OTHER skirmish stats in the set. Weird abilities, horrible cost. They can't all be winners, but seriously. . . . . this guy is one flaming bag of $h!%
It's as obviously bad as the mounted pig is good.