how to by traditional trundle.... I should've bought him on my LAN account before he got reworkedlol

None of the traditional skins have been re-released. I'm sure there is a reason for it. Plus I'm not sure how many have gotten a traditional skin but usually when they do stuff like this they like to keep it bundled.

I'm hoping this upcoming Black Friday they release it again. It would make sense assuming they haven't gotten the bundle out for it (assuming they do one)

Also remember you can get it via mystery gift so there is always that.