We have Elixirs, Drafts and Food at the moment.
How about a 4th type that will be for short term gain for a specific thing but has a long cooldown time.
On for 1-2 mins then cooldown for 5-10 mins sort of time frame.
The types of things you could get:
- 50% reduction to bleed/DoT damage
- 50% to block knockdowns
- 50% to block stuns
- 50% to block silence
etc, numbers and ideas are just off the top of my head probably more and better ones out there. Shouldn't be too hard to implement either as the mechanics are already there for other consumables.