Do They Stack, CMD Boosts of Shield Specialization and Mobile Bulwark

[HazMatt696]

The Shield Specialization feat adds the shields AC bonus (not including enhancement) to CMD and the Mobile Bulwark feat adds the full shield AC bonus to CMD versus Bullrush and Overrun maneuvers. Do these boosts stack with each other?

Let's assume our standard fighter is using a +2 tower shield and has the feats Shield Focus and Greater Shield Focus. Shield Specialization adds +6 to the fighters CMD to all maneuvers.

If these Feats do not stack, the fighter would add only the tower shield's additional +2 enhancement bonus, for a total of +8, versus Bullrush and Overrun maneuvers. If these boosts stack, it would be an incredible +14 versus Bullrush and Overrun maneuvers.

[Temperans]

Hmm they are both untyped bonuses, but then given the "untyped ability score counts as same source" faq some might say it applies. I would say ask the GM.

If it doesn't stack well you can spend the shield specialization feat on some other shield feat. Unless those crits are really bothering you.

[willuwontu]

Temperans wrote:

Hmm they are both untyped bonuses, but then given the "untyped ability score counts as same source" faq some might say it applies. I would say ask the GM.

If it doesn't stack well you can spend the shield specialization feat on some other shield feat. Unless those crits are really bothering you.

Incorrect, one is typed, one is not.

Shield Specialization wrote:

Prerequisites: Proficiency with selected shield, Shield Focus, fighter level 4th.

Benefit: Choose one type of shield (buckler, light, heavy, or tower shield). With the selected shield, you gain a +2 bonus to your Armor Class against critical hit confirmation rolls. In addition, you may add your base shield bonus (including the bonus from Shield Focus but not including enhancement bonuses) to your CMD.

Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of shield.

Shield Bonus is a typed bonus.

Mobile Bulwark Style wrote:

Prerequisite(s): Str 13, Shield Focus, Tower Shield Proficiency, base attack bonus +1.

Benefit(s): While using a tower shield, add the shield’s bonus to AC (including its enhancement bonus) to your CMD against bull rush and overrun combat maneuvers. While using this style, you can use a tower shield to grant you total cover along one edge of your space as a move action.

This adds an untyped bonus to your CMD.

They would stack on bull rush and overrun combat maneuvers.

[Temperans]

Ah I see it now, when I first read it they both seemed untyped. Shows how bolding changes how things rear.

[HazMatt696]

With the wording of shield specialization, "you may add" I wonder if they intended this to be a round by round decision. Meaning if you choose to add the shields ac bonus to cmd, would you lose the AC bonus to your actual ac for the round.

It would be nice if Paizo would clarify this.

P.S. my GM does not think they should stack ☹️

[glass]

willuwontu wrote:

Mobile Bulwark Style wrote:

Benefit(s): While using a tower shield, add the shield’s bonus to AC (including its enhancement bonus) to your CMD against bull rush and overrun combat maneuvers. While using this style, you can use a tower shield to grant you total cover along one edge of your space as a move action.

This adds an untyped bonus to your CMD. They would stack on bull rush and overrun combat maneuvers.

I disagree. Absent any text to the contrary, "your shield's bonus to AC" is a Shield bonus. Two shield bonuses do not stack. Not that this matters because you only have one bonus to add, you could not add it twice even if it was untyped.

_
glass.