The DD
d12 HD true
ability bumps as 3.0
BAB as a bard
new spell at every level except 3, 7, and 10.
60' blindsense at level 5.
wings at level 9
At level 10 you have:
+7 BAB, +7 spells, +3 nat AC, +saves as a Drd10, 10d12hp, +8 Str, +2 Con, +2 Int, +2 Cha, ...
Questions?