My original list is an Imposter list (https://sorcerytcg.com/decks/cmgwd1jaq0013lc0424qq7zfq). I originally picked Imposter because of access to Witch and Pathfinder. However, after brewing, I realized two things:

1 My original site denial list was struggling to make it's threshold requirements, and

2 In order to deny sites, you need to be quick enough to keep them on their back foot.

And I don't think Imposter is able to do that. Maybe the Imposter list should be re-worked to be a different mid-range type of site denial list, because it needs help. This list is meant to be faster.

With Elementalist, you have access to 1 threshold automatically, so you really only need 1 and 1 threshold to be able to do most of the things you need to do in the deck (i.e., Hamlet's Ablaze! and Raze and Landmass).

And since you have a baseline of threshold, let's take advantage of every speed advantage we can: Ghost Town, Lone Tower, Gothic Tower, Dark Tower, City of Glass, and City of Souls.

And since we're playing now, why not give ourselves some redundancy to play Landmass from the cemetery with Skeleton Mage.

The downside of this deck is that it doesn't have a ton of stuff to sink your mana into after you're done contesting the realm. We need to think more on this.