Based on my
earlier speculation about Events...
- Card that gives you access to a randomly drawn selection of extra events, like Black Market. This seems less likely now, since they should all be in the randomizer deck and it would be a hassle to take them out.
- Card that gives you access to a small, specific set of events (maybe even just a single event). Like Black Market, but with a static selection rather than a randomly drawn bunch.
- Events that let you gain special tokens (which I speculated thoroughly about
here).
- Events with set-up or passive rules that change the game from the start.
- Events that can have rule changes that toggle on and off when you buy the Event.
- An event that gives you +2 Buys. I think this is totally a thing that can happen. When this idea came up before, the abuse case was primarily due to cost reduction, but Events are unaffected by Bridge and the like so it should work fine. I would guess $2 for +2 Buys. (I see that you have this in the OP as well. I think $1 cost is too easy though).