Unearth + Lighting Attunement + Living Lightning = no living Lightning? Please help with options!

I tried this combo and it doesn’t work, and I think I know why, but I feel like there must still be a way?

This may seem like an obvious question for those who know but I have to crack this because it’s driving me nuts:

“Supports skill which cause damaging hits” is the first line of Living Lightning description - Unearth does this, a damaging hit I mean not lightning, I think this works if I can figure out how to add lightning to the “damaging hit”

“Supports attacks, causing them to gain lighting damage but deal less cold and fire damage” = Lighting Attunement says this though, so it… only works on empowering the minions “attacks” and not the spell itself because the spell is, well, it’s a SPELL and not an ATTACK (I believe this is why it doesn’t work with Living Lighting at the moment)

But come to you glorious Reddit community, hat in hand, hoping for some advice:

How the hell do I get lightning damage on UNEARTH?

To be fair, I’d also be happy to add it to Flame Wall but I don’t think that counts as a damage hit…

I had an idea of maybe using Empowering Sparks because I am already generating Power Charges from Lingering Illusion? But again, Empowering Sparks says “… some of you’re Attacks” so I don’t think it’ll work either

Tl;dr - please can anyone help me generate Living Lightning on Unearth (it’s socketable on on Unearth so I believe this MUST be possible)