Such a cool game! I love how intense the gameplay can get, since you have to think strategically and quickly. It was a lot of fun looking for an optimal strategy (I ended up using 3 Obsidian cards and 3 Salve cards - their reusable properties make them very powerful in this game). A lot of polish, too, with great visuals and sound design!
The only thing I could think of to add would be images of each item on the cards so that there's a bit more visual distinction between each card, which would be beneficial for a fast-paced game like this.
Other than that, excellent work!