By me~
This is a large homebrew that has the primary goal of allowing you to play as actual true dragons in a DnD setting without being unfairly overpowered.
To accomplish this…
A) I’ve included some guidance on how to better balance high level content
B) I’ve designed eight dragon-only classes, which are equivalent in power to the existing bard and wizard classes.
C) I’ve re-introduced a simple mechanic that allows martial characters to function much more effectively in combat; Flat Damage Reduction.
D) I’ve playtested it and refined it constantly for months
Also it contains a few new feats and spells that are suitable for use by humanoid characters! Complete with my personal guarantee that all of this stuff is at least as well-balanced as basic 5th edition DnD.