Wait a sec...
I just went over every rule regarding Weapon Abilities. It doesn't say ANYWHERE that Energy damage doesn't stack.
Flaming is +1
Flaming Burst is +2
Nothing says they don't stack.
Acid burst is +1
Corrosive is +1
Now, acid burst states, "An acidic burst weapon functions as a corrosive weapon."
Which means it does, "A weapon that has this property deals an
extra 1d6 points of acid damage on a successful hit."
Extra means, In addition to the damage already done. ie:
0d6 base
1d6 acid for corrosive
2d6 acid for Acidic Burst
Updating Flaming Burst, Icy Burst, Shocking burst, Sonic Burst to reflect the changes made in MIC would REDUCE the cost of the various Bursts and make it cheaper to do MORE damage.
As a matter of fact, I believe that Acidic, Flaming, Icy and Shocking should all be consolidated into Energy Burst [Synergy] as a +1 bonus, just Like energy Surge [Synergy] is the consolidation of the various energy surges from DM2. In fact, one should consolidate Flaming, Corrosive, Frost, and Shock into one entry as well, most likely called Energy Damage.
As per WotC policy, Sonic and Force damage would both have different entries. Force, I get. I never understood the Nerfing of Sonic damage.
But, If I am missing something, please point out to me where I am wrong. I mean, look at Energy Surge [synergy]
"An energy surge weapon functions as a weapon of the prerequisite type (corrosive, flaming, frost, or shock). "
It functions AS. Like. In a similar fashion, but is not actually the thing in question.
A +1 Corrosive, Acidic Burst, Energy Surge (acid) longsword would do 3d6 acid damage base, an extra 1d10 on a critical, and can be commanded to, as a swift action, do an additional 3d6 damage. In total it would be a total +4 long sword.
So SorO_Lost, are you arguing that it doesn't stack? I'm confused here.
EDITED: I just checked the FAQ, it doesn't really answer the question, but if anything, it leads me to believe that the damage is additive. Since Flaming, Shocking, Frost, Flaming burst, Shocking burst, and Icy burst are all considered the same and can all go on the same weapon. (making a +10 monster, but still)
EDITED: I moved this question to over
HERE.