Question

[dungeonguru]

That's a really tough question to tackle. Here is how I might try to start it.

You can look at Arcane Archer (I think its in the Xanathar's file from the community) to see how to set up a quaternary (4th) ability table to hold the domains. I would go ahead and use the 4th table because it *should* be free for usage.

I would then make copies of the domains and change the class available to your class and the Ability Table? dropdown to Quaternary on each of them.

That would be a start, because the other issue is going to be that each of the domain spells is bootstrapped with the tag "SpellType.cHelpClr" and you're going to have to step through each of your domain copies and edit the the bootstrapped domain spells and add or swap in "SpellType.XXX" where the XXX is the helper for your class, cHelpWiz might work since it uses the wizards spell table but I wouldn't guarantee it.

Then you'll have to do a bunch of testing and checking on each of the domain abilities that are bootstrapped in, some of the calculations might get thrown off because a domain is added to a cleric at level 1 and all the scripts might have a little variances.