Is Vel'Koz support viable in Gold elo?

Of course. Anything can be viable at Gold elo.

anything works

If youre a VK 1trick, yeah. Go for it. If you enjoy playing something enough, you can always hit plat1 with it at the very least. Anything after that may feel like an uphill battle tho.

Yes. No one really understands how to play safe or passive in gold so you can punish them super hard.

Velkoz is a viable supp at all elos. Gets difficult depending on meta at high diamond, but he rewards time out in

Yes - Painless, Eggsalad and Azzazapp have been playing Vel to climb on their accounts regularly (mains and smurfs). And they have been able to do quite fine from unranked all the way to Challenger when playing in the support role.

in < diamond you can climb with anything, heck. i got to plat 1 with klepto shaco jungle, no dusk.

do what u want

everything is viable in gold.