Is there a difference if I choose the different building options? Also, are the voice lines randomized or are they tied to a specific building option or the same all across the building options?
In addition, if you reset the buildings, would you still be able to get the mana prism bonus for completing the building again?
The difference is only cosmetic, but i'd recommend doing all three options since those are all mana prisms you'll get from the event. The Voice Lines seem to be randomized depending on the servant who suggested It when It finishes building (got the same one several times), the cutscenes are unique.
And the mana prisms rewards are mission completion rewards, so you can get them only once per option.
So does that mean that there is no point in resetting more than three times beyond grinding for the voice lines
Yes pretty much, do it if you need MANA prisms but 20 is not a large amount either way. Voice lines can be found online either way aswell
I'd probably get the mats from the shop first before grinding for mana prisms and voice lines.
