It wasnt a convention skin, it was a ranked skin - and its limited so itll never be back, sorry
None of the ranked skins ever have.
This thread was added on January 10, 2022, with posts from HiRezAjax.
Original Post
https://old.reddit.com/r/Smite/comments/s07f5d/ok_so_convention_skins_and_my_ranti_been_on_smite/