Dominion: Ice Age is a homemade Dominion expansion I have been working on over the past couple of months, it's still in very early stages of development of course and the release of Nocturne has slowed down recent progress. The main theme of Ice Age is tokens and the set features two types of token: Ice tokens and the return of Coin tokens. I doubt any of these cards are balanced in their current forms so thoughts, feelings and suggestions are very appreciated!
Ice TokensA number of cards in the set involve setting aside cards and putting a number of Ice tokens on them. At the start of your turn you remove 1 Ice token from each card you own that is set aside with Ice tokens on it and when the last token is removed you put the card into your discard pile. This first batch of cards will focus on showing what can be done with Ice tokens.
Snow Hag
This was one of the first and most obvious concepts - a cheap Witch but the Curses are delayed. This means that the junk will take longer to enter the opponents deck, but if the game ends before all the tokens are removed then your opponent won't have a chance to trash the curse, which could be interesting.
Edit: Changed from 3 to 6 tokens.
Yeti
EditA new Yeti, it now more resembles Saboteur than Giant. I'm more happy with this version, although the number of tokens might have to be tweaked.
Frost Spirit
Originally a cantrip, now changed to +2 cards. The cantrip version was far too efficient as an early game thinner and a late game Province setter asider. Hopefully making it terminal makes it harder to keep on top of icing things, we'll have to see. Masquerade is a crazy card, so I wouldn't be surprised if this follows suit. Province setting aside probably needs to be fixed, but it kind of needs to be able to set aside Estates so might be an ugly fix, unfortunately.
Artefact
A Contrabandy thing, it delays your good cards and topdecks the Victories, ouch! Needs a new name now...
Nomad
Just trying to be a simple Ice tokens thing, it's a Nomad so it travels around via Ice tokens. Also is a little similar to Nomad Camp so that's cool, I'm not sure why one Nomad has more money than an entire camp of nomads though.
Lake Village
Replacement foe Mountain Village and pretty much the same concept. I know that Lost City for $2 seems crazy good, but Encampment does it and gaining these is so awkward and you also have to keep buying them to have something frozen, although that part of the card might be a dud.
Glacier(s)

I'm still keen on a Victory that starts off frozen, but no more Coffers so I have these variations. Any thoughts?
ReservesMountain Outpost
A duration that's good now and bad on your next turn! Originally it was a bit of a stinker the but the on-gain Chancellor spiced it up a bit and now it seems to be in a good place. Now updated to be a Reserve and the on-gain Chancellor dropped.
Wanderer
I thought a Reserve that costed an Action to call would be potentially interesting, this plays itself from the Tavern, I think that's fine, other wording would be comparatively convoluted. The actual effect of the card was Inspired by Asper's Road, which I think is an awesome card idea.
Reclaim
Why insn't there a Reserve that looks through the discard? That seems like one of those low-hanging fruits that you have to do. The set needed a remodel variant and after many attempts I settled on this.
Bastion
Not actually a Reserve but uses the Tavern mat so it's in this section. Everybody likes action-victories so let's hope this works out!
Spelunkers
A simpler reserve, has nice synergy with Wanderer.
Sanctum
Caring about the cost of a gained card seems like a nice reservey thing, it's kind of a clunky trasher. I originally had it at $4 but I think it's teerminal do nothingy and awkward enough that $2 might be appropriate?
Periapt
I think this might not be very popular? It's kind of defence against junking attacks or you can store a whole bunch up and buy 1 Curse to gain loads of fivers. It could also be a really awkward +Buy source which could be fun? Or excruciating?
Off theme cardsCampsite
A village that you can pay to save for next turn, giving up money early can slow down building. Perhaps this makes deck drawing engines too consistent?
Sleigh
A Wishing Well type thing - seems balanced to me so for. Updated, it is now half a Lab. Kind of a boring placeholder card really.
Pioneer
I think this is neat, it's an Apothecary variant not a Peddler variant! Concerns are repeated searching from playing a chain of these, not as bad as Hunting Party, but Hunting Party is heinous so that's no excuse. Also this becomes a cantrip Chancellor when you trash all your Coppers which could lead to a lot of shuffling, a potential fix is to make this a choose 1 with a different option to hopefully stop this happening. Ignoring those logistical issues I'm a big fan of this, although nobody else seems as enthused, so maybe I'm crazy?
Spyglass
At first glance this might seem weak. It kind of is, but a dodgy Night Watchman thing that can turn into a Gold is still useful sometimes. I hope. It's "high skill" not weak!
Hunter
Young Witch was cool so let's try a friendly version. YW gets weaker as the Bane gets better, but Hunter gets stronger as the Prey gets better. The actual card is a $5 Fugitive, but when you draw one with the Prey it becomes a Lost City! The Prey costs $5 so that getting a good Hunter:Prey ratio becomes a little more tricky, hopefully leading to interesting decisions.
Scrounger
This is from that bunch of random cards I posted, but with updated Mountain Village wording and nice snowy art. I needed another $5 smithy and this seems cool to me. Adds to a small discard pile mini-theme with Reclaim which is nice.
OuttakesCold Storage
A Workshop variant that can gain $5's, but you have to wait a bit before you get them. Could be brought back, didn't seem too exciting.
Frozen Cache
Boring, could be revisited as an Event if I ever get around to deciding whether this set should have Events.
Citadel
Bit boring, but the top seems fine if something else needs a simple-ish action.
Ice Cave
Didn't work out, Wayfinder is sort of doing this kind of thing.
Venturer
This was the losing combination of strange and unpopular, even though I like the idea of the Iced-Coppers on gain.
Rediscover
Again I'm not particularly happy with the name - it's hard to think of so many ice themed things! This is a cheap expand but the gained card is delayed based upon how much more expensive it was than the trashed card. Gain and play shenanigans are hard to do with this but trashing $5's into set aside Provinces might be too good, so this might have to be limited to gaining non-victory cards. Retired, it was okay but a bit wonky and a bit boring, I can do better.
Barbarian
I think there's something here, this was kind of secretly broken though. Turns out Coin token Oasis is a pretty good $4 without any attack potential! Warlord is the successor to this, hopefully it works out. Now Swashbuckler is doing the whole saving Coffers thing, and Villain has a similar attack so I guess this had some okay concepts going into it?
Taiga
A Peddler variant. In my mind this was just trash it to do the stuff, but then I thought it could Ice itself for a bit instead. It seems strong, but maybe it's Another one that just wasn't too interesting really, I might return to this freezing from play idea but I'd probably make it mandatory as a kind of soft one-shot. Probably something Pixie like, a slightly above the curve $2 that's fine if you never get it back and not particularly broken if you can play it 2-3 times in a game either.
Outcast
It's like a small Menagerie. Probably don't need this and Sleigh in the same set but it's not the worst. Yeah this was just a hole-filler because I needed some $2s, I can do better.
Cauldron
A nice simple thing. Gaining Silvers doesn't seem great, but imagine gaining a Village and a Smithy! Gets truly crazy with cost reduction, like most gainers. Really no problem with the card, I still really like it, it was just I have on-theme gainers and trashers so there just wasn't room for it in this expansion.
Igloo
This started out exactly the same as Cargo Ship from Renaissance (different wording but the intent of the effect was the same) I'll give myself a pat on the back for that. I eventually made it a reserve because I'm not a huge fan of having just 1-2 Durations in a set and reserves are doing a pretty similar thing anyway but it's still pretty redundant next to Cargo Ship. I will definitely still have an Igloo card in the set though!
Cargo Ship
The name is taken now and Coffers have been removed due to Renaissance making them redundant.
Cabin
Coffers, but I'll probably make a rework (or just another card with the same name/image.)
Mountain Village
Name and Coffers taken by Renaissance, replaced by Lake Village.
Seer/Avalanche

I still love this, but Coffers are out and the name was taken (a recurring theme of this set!). I might try to fix it somehow or just have it as a random card not associated with the set.
Signalman/Beacons

I'm not sure about these State things, they were kind of experimental anyway and I don't really love them anymore. They also all used Coffers tokens to track things in some way so not a great fit anymore.
Outrider/Frozen Wilderness/ Bountiful Wilderness


Outrider might return as a cheap +buy card with no accompanying state. Sinister Plot kind of does the whole building up tokens thing I was trying here too.
Final thoughtsI have a few other ideas to do with Ice tokens but need to think of good cards to put them on- one is a card that sets itself aside with 2 Ice tokens when you play it, so it's only in your deck every other turn (assuming you're drawing your deck) and another is a setup effect where you set aside a card costing up to $5 at the start of the game with 3 Ice tokens, so it enters your discard at the start of turn 3 (Cold Storage could be a good candidate for this).
A concern I have is to do with timing of shuffles, Ice tokens won't matter if you don't shuffle between setting the card aside and removing the last token. Hopefully this concept can still work out though. Thanks for reading!
Also I need to give a massive shoutout to Violet CLM's card image generator. It was used for all of the card images in this set.
http://forum.dominionstrategy.com/index.php?topic=16622.0 And of course thanks to all those who helped me out with their insight and suggestions!