Additionally, if PrCs were made based off this class, they would likely include some form of heritage advancement.
Also, you play a Bard instead of a Warlock because Bard fits the flavor of your class better.
- The symmetry of gaining an invocation every level flows better on both the chart and feels more natural, instead of having to remember that there are two levels where you don't learn a new invocation.
- This allows you to have 1 shape and 1 essence of each Least, Lesser, Greater, and Ancestry, so that each grade can get it's time in the sun.
Eldritch Volley only allows you to fire three blasts at class level 18, not character level 18. I will amend that to be more clear.
Added to the base 9d6, you're looking at 38d6 total, or ~133 damage (~247 for Demonic). By 18th level that really shouldn't be too insane. It's certainly respectable, but it's nothing mind-blowing. Particularly since that is just about as high as you can take that damage, whereas other methods, including simple melee attacks, can rocket up past that with the same level of optimization effort. Heck, an unmodified disintegrate dishing out 36d6 damage at that level, and you can bet that isn't the most powerful option the wizard has available.
I do admit that the class hasn't been properly tested, and the balance is only theoretical, so it's quite possible that numbers need to be tweaked. Thus far the only feedback I've had from actual play has been regarding the angelic lineage, and that feedback was very positive (even given the game had a very heavy evil focus).
I'd love to hear your responses!