u/Alovoir

I got navia last night finally right after losing 50/50 to her bife (bi wife) and she's so welcome in my team as I didn't have a good main for geo dmg, but between C6 Illuga and Furina, which would be better for my teams overall damage? I know Illuga buffs lunar crystallize a lot, but Furina is another Hydro unit + all the buffs that she gives and the damage that she does, and I'm kind of surprised that it's a toss up for me rn.

The team I have currently is Navia, C1 Linnea, C6 Illuga, and Columbina.