'Take the top two' of several dice with explosions

I'm trying to create a macro that will add only the top two highest dice from a pool of dice, and some of the dice explode into different dice. The problem is that the exploding dice explode into different die types. I looked into this a couple years back and I can't remember if I hit a dead end or just gave up. If anyone knows if something like this is theoretically possible please let me know!

Sounds like api script territory to me.

If your initial pool of dice is always the same or an exploded die is replaced by the new die (instead of adding to the pool of dice alongside it) you may be able to get a workable solution by precalculating outcomes then using Rollable Tables to represent those outcomes.

Good thought, RainbowEncoder. Jason, can you give a specific example? How many variations would be required?