Nice job on this! I played normal and easy and will probably give hard a shot soon. Cool that there's these options in a jam game!! And seeing the "hero" party have different party members in easy made me want to replay again in hard.
I was a lil confused at first with the summoning screen. I'd assumed I could summon multiple of the same unit so I kept clicking the one slot and wondering what was going on with my remaining mana. Bit silly of me in hindsight!
Also would be nice to have the player's menu buttons hide while the attack phase was happening. Would be a good way to direct the player's attention to the action!
Congrats on submitting, this was a nice lil experience!