Off the top of my head, not that I can think of, besides a lot of point and click games changing the cursor to indicate what actions you could take (examine, talk to, etc.)

But what I really liked about it here was that it indicates your current state, so you know if you’re doing damage/taking damage without having to look away from the cursor at all. I feel like you could carry that idea into any mouse-based game and it would work really well :0