A few steps back is usually enough to get your shield cooldown back online if you run into such situation and do not have a 2nd shield/rune reflection. Served me well everytime there were wyrms hidden behind their drakes .
My skeleton archmage is still alive (well, as much as an undead can be
), i lost a life this time not due to my shield not automatically activating (as i now continuously check) but because overpowered rare had been generated.
It was in the alternative lake of nur (water levels instead of water then ruins without water), it was a rare/unique entranched horror (the regular ones have been burning very well from my strong spell).
Not knowing what to expect, i activated on top of my rune shield my bone shield (skeleton racial) to cover everything.
As bone shield takes a turn to activate, the rare shot me, and ... no more shield and no more bone shield, instead of listening to cowardice and save my character life by teleporting (entranched horror never move) , i decided to give a try to burning that thing with my strong spell before teleporting away, so i could play an attrition game, burning it, retreating, coming back, then burning it again etc...
A bit like you do with the Master if you character is really too weak to stand in a long fight with him.
But while i indeed burned the thing, it shot me again in the same turn and ... Eidolon loading.
Wow, 1st turn it destroyed -both- bone shield+damage shield, and 2nd turn, it destroyed the whole character health (near 600 thanks to many +health items as archmage are very low on health without them).
Looking at the log it appeared that the thing was a Solipsist dealing insane psi damage.
Fortunately it was in a corned of the level, far from the stairs down, so i could go back and just run to those stairs to burn easily the fortress entrance boss and get in it.
Some time later, i went to Dreadfell and managed to defeat the Master, i had to use the attrition tactic as my mana was running low a bit too fast in comparison to his health and resurrection.
I really wonder if the Wildfire sustain supposed to nearly drop enemies fire res by 50% is really working as before as i didn't noticed any real difference between having it on , maxed, and having it off , especially against the enemies that had no visible fire res.
Before for such enemy with no fire res, their fire res would get into negative as expected and they would really take huge damage, but it does not seem to happen now, unless it's some really bad luck in the damage rolls.
Anyways, in my victory against Dreadfell, i found this really good item , a nice alternative to the Black Robe actually, even if it's less strong in Spellpower, it has nice +stats