First of all, this is in no way intended to be a substitute for
Fly-Eagles-Fly's great Winery/Wine design! I first wanted to do something with water, wheat and bread but we already have Mill and Baker.
Winery and
Grapes are part of a split pile with Winery above and Grapes below. Both cards are expensive for their vanilla effects but sometimes you might just use them as ordinary engine pieces.
There is a Cornucopia-like theme of variety and while the Coffers and Debt of Grapes are usually a liability you can make an asset out of them. Something like 5 Coffers and 6 Debt can be situationally good.
Wine is a recycling of the main idea of
Phoenix (Phoenix was superbad because it is so superslow, taking at least 3 turns to be played again).
Now what about those
Night Grapes and
Ice Wine? Obviously the source of the idea is thematically, you harvest frozen grapes at night to make sweet wine out of them but your workers are not happy about nearly freezing to death.
My first idea was to make Grapes an Action-Night but that's too wordy to be stuck on one card. So perhaps simply make a double pile of Grapes underneath the Winery, i.e. once the Wineries are gone you can always choose to gain either kind of Grapes? Or maintain the flexibility and implement it as an Action-Night via printing the Action part on one side and the Night part on the other which comes with the problem of having the card being visible in and above all on your deck? I have no idea how to physically implement it well.
I am not totally sure about the downside of the Night Grapes but it does nothing constructive on play and having one or more villages out of your deck for several turns should hurt some.
Ice Wine is controversial as it is something that DXV tested for Intrigue but didn't work: 3 vs 5 Provinces leads to a VP spread of 12 whereas 3 vs 5 Ice Wines leads to a VP spread of 16. Perhaps it can work as on a non-Supply card that is difficult to get?