Warpriests and inquisitions

[Hazrond]

So I am making a very death focused warpriest of Charon and I was interested in the Possession Inquisition due to its tenth level ability ("I AM THE HAND OF DEATH IN THIS WORLD, DO YOU BELIEVE IT HAS SWAY OVER ME?!") and I now want this, is there any way to get that inquisition as a warpriest without multiclassing?

[Eltacolibre]

According to ultimate magic, only inquisitors can take inquisitions...so as far as I know, nope.

[Hazrond]

Eltacolibre wrote:

According to ultimate magic, only inquisitors can take inquisitions...so as far as I know, nope.

anybody can trade a domain for an inquisition, per ultimate combat, and a paizo FAQ however, I am unsure if the blessings count as domains

[Paladin of Baha-who?]

They do not. You can't trade a blessing for an inquisition except by GM fiat.

[Hazrond]

Is there some way to gain a domain through feats or some such? I would very much like to avoid multiclassing

[Imbicatus]

No. Any class that has domains can take an inquisition, but blessings are not domains. Also, warpriest can never take an inquisition even if they do multiclass, as there is a restriction that a domain class feature they get from multiclassing must match their blessings.

[Dafydd]

3 Options

1 and most likely, GM Fiat.

2, Start a petition for a feat that gives a domain (similar to the bloodline feats)

3, find another way to get the effect.

[Peter Greening 447]

there is a feat in the Advanced class guide that gives you the 1st level domain power of a single domain of the deity you follow.

Believer's Boon

Your deity rewards you for your faithfulness.

Prerequisite(s): Wis 13, alignment must be within one step of your deity's.

Benefit: Choose one domain granted by your deity. Once per day, you can use all 1st-level domain abilities granted to clerics of that domain. You gain access to this one ability only, not the higher-level domain ability, domain spells, or additional class skills that the domain might grant, or any bonus feats that are listed under its granted powers. Your effective cleric level in regard to this ability is 1st level.

Special: You can take this feat twice. When you take it a second time, you choose another domain granted by your deity.

If you grossly violate the code of conduct required by your deity, your alignment shifts so that it is more than one step away from your deity's, or you no longer worship your deity, you lose access to this feat. You can regain it once you atone for your misdeeds to your deity (see the atonement spell).
I don't know if that counts enough to instead take an inquisition, but it is a start. and does set a precedence for later feats to do so