New MTX Type Suggestion: Explosions!

The recent change to Herald of Ash has caused me to no longer use it in my build, however I really enjoyed the Celestial Explosions that occurred when using it with the Celestial Herald MTX.

This got me thinking: what if there was a type of MTX that modified how the enemies exploded from various mods or effects that aren't from skills?

Celestial Explosions is a no brainer, but what if there was an MTX that made each exploding mob a different color of firework? I know I'd buy it.

Chieftain MTX Buff plz! Kthxbai.