u/StunningHeart7004

Mostly optimal for toplane but kinda works in mid as well.
Roa->Seraphs->Actu->Raba->Fimbulwinter

Yes this is late game build you spike like crazy with Fimbulwinter last item. Actu does 51% increased dmg, shielding so Late game Actualizer E->Q does like 2.2k dmg plus you have 5k hp.

Runes -> Dft bone plating for surviving lane. or electro

Fimbul 4th is also ok for high hp low dmg.

buy 2nd tear after seraphs stack so when building actualizer.

Basically, you flash Act E->W to make enemy AD disappear.