I've been playing Endless Legend for a while; it's one of my most played games on Steam. So when I heard about Shifters I picked it back up again in earnest. However, I kept seeing mentions of ice in the expansion's blurbs and achievements, and I was very confused. Two achievements in particular mention it: Like Peipus and Berezina. I started doing google searches, and apparently ice flows only show up in the expansion when a specific prayer appears in the Altar menu. Except...I've never seen that prayer in over 60+ hours of gameplay. Which I found really weird for a supposedly new and highlighted feature.

After asking on reddit and on the Steam forums and getting no responses, I'm hoping the developers might take a look and see if this is a bug or not. Am I doing something wrong? Is there a specific world preset I need to use to make it appear? Was it removed from the game?

Very old thread (one month). I guess you found the solution by yourself. If not, look here:

http://endless-legend.wikia.com/wiki/Altar_of_Auriga

If you have build the "Altar of Auriga" and click on it's icon (up to the "end turn" button) you see the left side the "vote" options, you need pearls for.

Have fun

I did not find the solution. In fact, you've only stated something I've already expressed knowledge of in my initial post. As I said, I know how prayers and the Altar system work. I've used pearls to choose between many different prayer options. But I've never seen the prayer option for ice at all. Not even one prayer I've seen even mentions the word "ice". I can go hundreds of turns, hoard hundreds of pearls, and unlock everything else, but I've not even seen the ice flow once.

I updated my thread on the reddit multiple times.

https://www.reddit.com/r/EndlessLegend/comments/4zsgnu/is_there_some_precondition_for_the_ice_shelf/

I feel as though I've not only been given two impossible to achieve achievements but also lied to about a DLC feature.

I confirm that the winter option to activate the Ice Sheld is rarer than before Tempest.

It's very rare now. Something like 1 winter on 8.

Ice shelf are an interesting special strategic feature. It's a problem if it so rarely happens.

I think the option should appears on 1/4 winter, especially in the early winters.

This was posted even prior to Tempest's release. I haven't even bothered picking up Tempest because, after countless games, I have still not once seen the Ice Shelf prayer in any of my winters. I've received no response from any developer or representative on any of the possible contact mediums, and if the prayer occurs once in every four winters then it is now beyond a statistical improbability. 

Let me illustrate this a different way. An extreme conservative estimate of 20 completed games with at least 6 winters each is 120 winters; that is over 40 times what should be necessary to have a single Ice Shelf prayer. In essence, if the game worked as promised, the likelihood of me not receiving the Ice Shelf prayer as an option even once is approximately 5.7e-71%. That's 0.000000000000000000000000000000000000000000000000000000000000000000000057% for those not familiar with the previous notation.

I loved Endless Legend. But I feel cheated and ignored. It's not likely I'm going to be investing in the Tempest expansion or any future games if such an oversight exists. Especially given how dead these forums are.