Very cool atmosphere and amazing visuals. I like that you were able to incorporate projectiles into a card game. The tutorial is very cool and tells a great story. But I can't skip the tutorial even though I've watched it before, and it's quite lengthy. The deck has some slight balance issues - the chance to draw hero cards is a little bit low.
Another small issue is that I wish there was an indicator showing when I can draw cards for free versus when I need to spend essence.
Still an amazing game though! I hope you'll continue developing it.