[RPG] Do bonuses to AC stack

armor-classclass-featurednd-5eracial-traitsstacking

The Warforged get +1 to AC from their Integrated Protection feature.

The forge domain cleric can use the feature Blessing of the Forge to enchant their armor for another +1 to AC.

The Soul of the Forge feature forge domain clerics get at 6th level adds another +1 to AC.

Fighters with the Defense fighting style get another +1 to AC.

Assuming the use of plate armor and a shield, is it possible to take 6 levels in forge domain cleric and one level in fighter with the defense fighting style to get 24 AC?

Best Answer

These stack.

Here are all the relevant features:

Blessing of the Forge

[...] At the end of a long rest, you can touch one nonmagical object that is a suit of armor or a simple or martial weapon. Until the end of your next long rest or until you die, the object becomes a magic item, granting a +1 bonus to AC if it’s armor [...]

Soul of the Forge

[...]

  • While wearing heavy armor, you gain a +1 bonus to AC.

Defense

While you are wearing armor, you gain a +1 bonus to AC.

Integrated Protection

Your body has built-in defensive layers, which can be enhanced with armor:

  • You gain a +1 bonus to Armor Class.

[...]

This adds up to +4 AC, and there is no reason for these not to work together, as they are all just bonuses to your AC, not methods of setting it. And finally, wearing plate armor for a base Armor Class of 18 and a shield for +2 AC brings us up to 18+2+4=24, as desired.

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