I don't see any particular buffs that are appealing.
For Brimstone Eater, making it costless would clash too much with Cremation, a flow of quanta, with an option to burst. 3|1 and producing
![Fire :fire](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/fire18x18.png)
for 1
![Fire :fire](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/fire18x18.png)
? Too much, and could relatively make it overshadow Burning Tower (seriously). Making the cost 1
![Chroma :chroma](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/chroma18x18.png)
is an interesting proposition. Can you allow vote changing? I overlooked this option, and I feel it could be an acceptable one.
For Ash Eater, I think it sits with Photon on this one. Fire only deserves a quanta gain from creatures in the upgraded meta. It's really a clash of being both an effective attacker, and giving fire a nice flow of quanta to sit on, of which it is fairly proficient at already. No buff needed.