Very creative take on the theme, well polished, and well executed. Excited to see how this concept could be expanded on and what synergies you guys could come up with.
It seems to be an iteration on a deck builder. My one critique of the game is that with deck builders, you know you'll eventually draw the card you need, or use the cards in your hand and adapt it to the situation. With this game, you can keep hitting the same unneeded rune over and over again because it doesn't go into a discard pile or something. I feel like I didn't have as much control over which rune I was hitting. Maybe it was a timing/skill issue.