Tomb Keeper Tiberius skin

  • Hello!
    So I wanted to purchase the Tomb Keeper Tiberius skin since I've missed the BP Sands of Myth.
    The skin is listed as unlimited and I thought that unlimited skins could be bought right after the event/BP was over for 1200 crystals.
    At least,that's what the wiki says.
    But I cant find the option to purchase the skin.
    Help,pls ;-;