Summon Phantasm on kill Support MTX

Hello!

I was wondering if it would be possible to create mtx for support skills like Summon Phantasms.
It would be nice to change up their look.
But maybe it's not possible due to how the code is designed?

I don't know if this is the right place to ask or who to ask but if someone got more information that'd be nice ^^.

I wish they can add mtx to the support gem some day at least.

Cheers,
Teddy