Haplo
Prophet
- Joined
- Sep 14, 2016
- Messages
- 6,563
No. You keep the d8 sneak attack and newly gained sneak dice from vivi will also be d8 as long as you keep on using small blades like dagger, kukri etc, and the gains from vivi spellcasting and mutagen, mummification etc outweigh those of continuing as knifemaster.But you sacrifice some of his offensive powers (d8 sneak attack) and high level rogue abilities (which are pretty awesome) for that.
Also I think once he's level 10 in KM, he should be able to take the advanced Rogue feats on Vivi discovery levels. They share a fair amount of feats anyway (such as Crippling Strike).
But Opportunist and Double Debilitation would be kinda nice too.