Is it possible to Change exploding dice?

I've been trying to find out if it's possible to get Exploding Dice mechanics to change the die that they start rolling after they explode. For example, I'm trying to get a mechanic to work with a homebrew class. One of the abilities is that when you roll the maximum on certain dice, you then roll d8s  instead of whatever that dice was, and then explode into additional d8s if those also explode. Is that even remotely possible in Roll20 or do I just have to manually roll d8s or make weird multi-step workarounds to kind of get that effect?

Hi Austin G.,  There is no native mechanic in the Roll20 diceroller that does that. However a Mod (API Script) could probably do something along those lines. Note that Mods require the Game Owner have a Pro account. 

It should be possible to do this without mods with some template trickery - if you give me the full details and numbers, I could write you something that does what you need. EDIT: A quick example: A d6 is rolled, if that roll is not a 6, another d6 is rolled by sixes are rerolled, and if a 6 is rolled, a different row is shown, where an exploding d8 is added to a 6. &{template:default} {{name=[eraser](#" style=" display: none; class="showtip" title=)}} {{[0](#)=}} {{[1](#)=[[1d6rr6]]}} {{[[[1d6>6]]](#)=[[6+1d8!]]}} {{[0](#)=[eraser](#" style=" display: none; class="showtip" title=)}}

Tuo, are you vying for RainbowEncoder's throne? :D

Thanks for the help! The example I gave is most of what I was looking for, the only thing that changes later is the number of potentially exploding d6 that are rolled. For more specific reference, this is the Atavist homebrew class for 5e. Their special Rend Dice start at 1d6 and eventually becomes 4d6. There would probably be weapon attack dice like a Greatsword involved too that can proc these d8, but I don't think that would be too much of a change in the string itself, mostly just a 2d6+Stat version.

The need for more than a single exploding die will require a different tactic than Tuo's macro. Exploding into a different value can be done as a dice expression without any template trickery but a little unwieldy for multiples. { {d6=6} * (6+d8!), d(6-1) }k1 That will mimic a d6 that explodes, and keeps exploding, into d8's. For multiples you have to repeat and add together. So 2d6 into d8's would be { {d6=6} * (6+d8!), d(6-1) }k1 + { {d6=6} * (6+d8!), d(6-1) }k1 In terms of what rolls happen this behaves the same as Tuo's but as a single expression. Gauss said: Tuo, are you vying for RainbowEncoder's throne? :D The purpose of a throne is to be usurped

RainbowEncoder said: Gauss said: Tuo, are you vying for RainbowEncoder's throne? :D The purpose of a throne is to be usurped Perhaps, but I still have a long way to go for that!