BryonD
Hero
Cover won't help it? Shield of Faith[/ii] won't help it? Shield won't help it? None of those boost it either. It's that weak for a 2nd level spell? You think that was the intent?
Then I imagine our rule will be a house rule. A 2nd level spell weaker than mage armor is pretty lame.
I figured the line "...regardless of what kind of armor you are wearing" implied that they meant for barkskin to be a replacement for armor and thus stack with everything that can boost armor. If that isn't the case, they need to take a look at it. It's super weak for a 2nd level spell.
Your points are reasonable. But by a flat literally interpretation of the wording, NOTHING stacks with it because there is nothing to stack WITH.
Check you AC as if barkskin does not exist, then use that or 16.
Not saying is it a good spell. Not saying it is well presented. Not saying this is what is even intended because clearly I don't know.
House rules are your friend.