draculemorningstar
While everyone is voting/talking, I'd like to throw out that the short term is what matters right now. There are a lot of strong people and multitudes of divinities out there. Eventually, they can take whatever divinity and power they want. What matters now is maximizing growth while avoiding problems. 1.) Divinity: MC sounds the best to me power wise by having contradicting divinity types, but... how is he gonna use it without raising questions. Short term, it'll be easier to explain why Vena has it(mutiny), and in the long term, MC can always find another Shadow divinity. 2.) Power: giving it to MC would make it easier on hunting gods. He can widen the gap to catch them easier and then give the power to Vena to quickly make up for it. Although.... if they want to stay really low key after this in the short term, the power up is less effective on MC since he doesnt have much to use pure power on right now. Having Vena get the power would give her time to adjust before the long term hunting and would make her strong enough to more reliably split off and do different things. .
I personally like option 3 cause Baldur doesn't have much need for power since he's passively getting stronger as time passes and him possessing vahns divinity and becoming a god of shadow might be somewhat contradictory to his already god of light suns divinity. and hey having a waifu who control's shadow could be pretty cool I'm mean just think a dark elf yandere waifu with the ability to merge with the MC's shadow and stalk him cause of her immense love for him while using the excuse of keeping an eye on him so that non of the sl*t's come close to her soulmate.