Have you tried the "normal" 80stam level?

You can also buy elixirs from the Honor Medals shop (250 for gold, 500 for rainbow)

Alright I just bought one with honor medals, then i tried again the (gold) elixir mission and got 2 elixir out of 2 runs, so apparently you have to have 1 in your inventory to get them from the mission.

Originally Posted by BoredMonkey

Alright I just bought one with honor medals, then i tried again the (gold) elixir mission and got 2 elixir out of 2 runs, so apparently you have to have 1 in your inventory to get them from the mission.

Nah, just RNG being RNG. If you hadn't purchased the elixir, you'd have gotten them from the mission eventually.

I normally only run this when I need a gold and it almost never takes me more than 2 runs to get at least 1 gold elixir. More often than not I end up getting 1 per run from this.