Domain piggy back

[AthasianWarlock]

I was wondering if there are any feats that allow characters to piggy back on other classes. I am aware ToB does this with feats that allow players to pick up martial stances use once per encounter. Are there any feats that allow characters to piggy back a domain, to gain the ability to cast spells from it one per day?

[JeminiZero]

For Arcane Casters there is the Arcane Disciple feat in Complete Divine, which lets them learn all spells from one domain, but based off Wis.

If you want a non-caster to suddenly pick up spellcasting, that is usually far less optimal. There are various feats which grants SLAs. And Magical Training grants cantrips.

[nedz]

There's a whole bunch of such feats, mainly in CAdv.
Which classes are you trying to synergise ?

[Piggy Knowles]

Taking the feat Planar Touchstone (Catalogues of Enlightenment) gives you a domain granted ability. Don't know of any feats that let a non-caster cast domain spells once per day, though.

[Darrin]

In addition to Arcane Disciple and Planar Touchstone, there's a Domain Draught in MIC. Allows you access to the domain power for 24 hours... but doesn't specify that you have to be a cleric or even a spellcaster. You also gain access to the domain spells, but only if you already prepare domain spells. (Wizards/sorcerers can do this via a PrC that grants a domain, such as Divine Oracle.)

There's also a feat in Dragon #343, Divine Sorcery, that gives sorcerers access to a domain power and one spell (but only one) from the domain list each day.