Ghalta, Primal Hunger was spoiled early (or was it leaked, not sure, it was shown to be a promo card of some sort anyhow). It has kind of a unique bonus, if you ramp through creatures, so let’s see what we can come up.
The problem with ramp right now is that it’s really hard to find good ramp targets. We have plenty of fair to good two mana ramp creatures, but those four-drops remain quite elusive. (I’m not counting Bristling Hydra here, because we are not going for an energy deck here).
We even have a couple of fair to good three mana elves as well.
So, how about this: We play Channeler Initiate on two, Rishkar on turn three, giving both your creatures a counter, and then we can play Ghalta on the next turn. (Initiate starts with power 0, but has three after you use it twice and give it a counter with Rishkar, Rishkar has two plus one from the counter, so both of them can produce one mana and together they pay for six of the cost, leaving you to pay four, which is the number of lands you should have at that point.) Kind of a Magical Christmas Wonderland scenario, but not that far-fetched.
Are we all in? Fuck, yes. In the first tests, you should definitely always be all in. Then you can start to think about different matchups and how you’ll streamline your deck against those.
Admittedly, we could be a little more creative with the manabase, but that’s going to work pretty well. There is a bunch of Deserts that would definitely be good here, but on the other hand, Ghalta and Carnage Tyrant already have Trample, so it’s not that important.