multiclass a cleric + ?

[Lelo Mariin]

I want to do a cleric of selune multiclassed into X
my experience in dnd is just the bg games
what would be a good/fun class to combine a cleric with?

my party would be mostly
myself
shadowheart
astarion
undecided yet

[Qiox]

A common one is Tempest Cleric with Sorc, so that you can maximize damage on Chromatic Orb (Thunder or Lightning) early on, and on Call Lightning later.

[spoiledpeach]

I've had fun running a Light Domain Cleric of Selune/Gloomstalker Ranger, though my focus has never really been min/maxing damage. Currently I'm running a Divination Wizard/Light Domain Cleric of Selune, as inspired by the Silver Ladies. Extremely fragile canon, but it's given me a lot of great roleplay options.

[Saph]

Cleric being as tanky and support heavy as it is, it's a good frontline fighter/support hybrid. Speccing into something like Fighter, Paladin or Barbarian would probably benefit it a lot in terms of multi-classing with some fun options in Warlock, Sorcerer or Wizard.

Dual clerics with Shadowheart can actually be incredibly strong, it's what I used for the first half of act 1 on my first character and Inflict Wounds alone paid dividends in rougher encounters. Make good use of Shield of Faith and buffs like it, higher AC is amazing.

For your undecided slot, you can pick anyone since you're able to respec any character into any class, a caster ideally so you don't end up with a posse of meatheads. But if you're against using the respec then Gale would be a solid pick in terms of balancing the party. That or a hireling.

[Karmilla]

Cleric pairs well with other wisdom using classes - Monk, ranger, druid (there is some anti-synergy here though). Fighter and rogue can also work, depending on what you want out of them. The big question here is, what do you want out of the cleric?

Monk + cleric would probably be a very mobile melee fighter without armor, doing a bit of casting on the side for utility. Shadow monk may be a nice flavor option here. Both benefit a lot from high wisdom, so could definitely be interesting a sort of "temple monk" build.

Ranger + cleric can work in a similar fashion, but probably with a higher focus on ranged damage. I'd recommend starting with ranger (for the equipment proficiencies) until 5 for the extra attack and then going full cleric. Gloomstalker is very strong and I guess has some interesting flavor with your character as well.

Druid + cleric is a bit low on damage and super support / utility heavy. You'll have to decide whether you'd want to lean more into cleric or druid, because otherwise you'll miss out on the high level spells. You can't cast while in wildshape, so there is some anti-synergy here.

Fighter + cleric is good if you want a very tanky caster. Action surge is always super strong and the extra attack and (if you're going there) extra ASI can help as well. I'd recommend starting with the fighter and going into cleric at the level you've gotten out of fighter what you want, so you'll get all gear proficiencies. Battle master would make most sense here I think.

Rogue + cleric is not as common, but can definitely work. Think of a magical temple assassin. Thief would probably be of most use here, the extra bonus action is just that powerful and a cleric can put them to good use as well. You'll need high dex and wisdom for this to work, so your ability points need a good distribution, aka dump int and str. You'll need to choose whether you want more sneak attack damage or more casting though, since both classes do scale well with levels.

[Yagger]

11 cleric 1 wizard, get all the wizard spells

[corisai]

Cleric 11 / Wizard 1 aka Buff-machine.

[Lelo Mariin]

Dark Urge Cleric of Selune multi classed romacing Shadowheart.

Dang, i never thought of Monk class. Seems fitting!

Any recomendations of levels?

[Karmilla]

Monk 5 / Nature Cleric 7 could be very interesting. You'll have shillelagh and with high wisdom that can do a nice bit of damage in combination with a staff. You'll have an extra attack and you'll have up to 4th level cleric spells. You'll miss out on an ASI though, but that's really not the end of the world.