Ok a slot machine that has a hidden reward of a elixir with a side effect that needs a elemental resistance skill. Thats so specific that im seeing that this might be a crudely written story. Author really only needed to include something like "well if i didnt have the s rank elemental resistance skill, i would have to take a year to finally consume the elixir." just to add some depth. Without it, it feels like its a way too specific reward just for convenience.