I am trying to fit Merchant in several decks.
I tried in old ones like Snakes or Rage Rush but he is bad there. I still have to test Totems with MErchant + new Pandem.
I am trying new decks and found two little combos that can be improved. I don't know if they can became meta but I see a possibility if they get improved.
1: RC Aggro / Aggro Control
Most of the list is all over the place, but the main idea is to combine aggro with Sculptor + Vermin + Merchant for a lot of easy removal and free zombies. Merchant itself can bring back a Vermin. With only one death can bring an Sculptor.

2:RW Energy Aggro Combo
Main combo here is, besides energy mechanics, Fia+Forcewielder, which can hit a lot of free face dmg in some situations. Merchant is ok because of synergies with Charged Aurite, Reactor and Forcewielder; main targets to get back usually are Forcemages to get board presence or Fias to combo face. If oppo isn't playing artifacts, Gnomes are nice to bait plays with reactors + get another shield or resurrection.

I know a lot of improvement can be made in both decks, I hope someone hits something good.