I read it as exploding per die but capped per cast.Question for those following the Sorcerous Burst math:
The spell description indicates that your exploding dice total (up to your Cha mod) gets added to the base damage of the spell, which of course starts with 1d6. However, while I was reading it as exploding per die, it could also be read as exploding as per cast.
In other words, at 1st level I roll 1d6 base, and could get up to an extra 3d6 of exploding dice. However at 5th level, I get 2d6 base, and could either get 4d6 exploding dice per die, for a theoretical max of 10d6, or only 4d6 exploding dice for the entire cast, for a theoretical max of 6d6.
In your opinion, which is the correct reading? The latter seems more reasonable from a game balance perspective, but I'm not able to program it in Anydice, so it's hard to know what the actual quantitative difference is.
If you have are 5th level and +3 on the mod and the results are 6,6 you get 2 extra rolls, and they roll 6,6 you get one more roll.