There was a Riot post sometime ago that addressed the Prestige skins topic - according to Riot all 2020 prestige skins would be available by the end of year. I am waiting for Obsidian Dragon Sett, I have all Thresh skins except for the prestige edition but it looks kinda iffy. So I don't mind too much.
I will add the Riot post link if I can find it.
Edit - https://www.leagueoflegends.com/en-us/news/game-updates/prestige-through-end-of-2021/
SMH, no one has realized that Wild Wild West Thresh is the one true skin we deserve. Legendary skin, hook is a lasso (think rodeo), lantern is an oil lantern, he's obviously dressed like the cowboy reaper of souls would look. When he casts Q he winds up his lasso by twirling it over his head, as is cowboy tradition. throws hook like an actual cowboy would and if he hooks someone it'd look like the lasso was roped around them. Flay, gotta have to do with rangling bulls. Maybe matador-ish(?) like he is ushering a bull in the direction of the flay while the actual animation of the flay (not the hook but the particles) is a bull. W is just him tossin out the lantern which shines brightly of course. The R would look like a bull pin or something. I dont really know but now that ive devoted so much time into creating a concept for the skin i really want it EDIT Ex: Q Channel