Very clever and fun game! Just a couple things that would dramatically improve the QOL would be make the hover tooltip collision a lot bigger. You have to mouse over the VERY center of a shop item to get the pop up right now and it's a little finnicky. Another thing is I think just get rid of the tombstones. You instinctively want to hover and click on the units since that's what you clicked to buy them but you have to hover and click on the tombstones once they're on the field. The tombstones just don't feel quite as intuitive and I don't think they really add anything. One last thing I'd recommend is making the cost of things apparent on the units/spells in the shop so you don't have to hover and glance up to your coins to see how much it costs. It's much easier to make decisions if you can see all the necessary info in one place.