Domain Mastery and Subdomains

[Angry Wizard]

The Ecclesitheurge Cleric archetype allows a cleric to access to all their deity's domain spell lists when choosing his daily domain spell slots (a crude summery I know, but bear with me).

Can the use of Domain Mastery allow me to access sub-domain spells as well? Can my Cleric of Asmodeus of Evil (primary) and trickery (secondary) swap out his trickery spells and access the Ash (Fire) Domain and cast Disintegrate? I personally see no clear reason why not, but I'll let the forums debate it.

[Azoriel]

As far as I'm aware, so long as it's a legitimate domain option, it should be available. The only time it wouldn't be is if you've already selected the parent domain (or a related subdomain) as your primary. Subdomains that fall under multiple categories would still be available so long as you aren't trying to overlap. For example, your cleric with the Evil domain could pick up Devil (Law) as his secondary, but not Devil (Evil).

[Angry Wizard]

I thought so. Thanks for your thoughts on the matter.