shavaas |
Ok, here's another one:
Alchemist Discoveries wrote:The following new discoveries can be taken by any alchemist who meets the prerequisites. Discoveries that modify bombs and are marked with a single asterisk (*) do not stack. Only one such discovery can be applied to an individual bomb.
So, for example, the Grease Bomb and Healing Bomb discoveries do not stack in any way. They are two distinct abilities with non-overlapping effects, yet they do not stack together.
(And don't try to argue that they count as the "same" ability since they're both Discoveries that use a bomb. Guess what... Haste and BoF are both spells which use spellcasting.)
If a grease bomb and healing bomb were used on the same bomb their effects would absolutely work together assuming they didn't give bonus to the same thing. The problem with bombs is you can't do a grease bomb and a healing bomb. Not because they don't stack, but because the rules specifically say you can't. "Only one such discovery can be applied to an individual bomb." means I can't do a grease or healing bomb together even if I wanted to regardless of stacking. I would also note that none of the other things thus far that reference stacking have had such an explicit restriction.