Hi, you can press F1 for the help screen. While this is printed to the log at the top of the screen at the start of each game, it could probably also be added to the main menu for folks who miss it... I'll update the game soon... edit: this is now done for V1.3
Ability names are always shown with an orb cost following the name, with orbs to spend displayed to the right of the primary card. I tried to tie them together visually so it would be intuitive but perhaps it could be done better... They're limited action points and cant be replenished except by cycling your hand to the next guy :)
I appreciate the offer for audio! Unfortunately I have no ambitions to further the game beyond maintenance since it's just a throwaway game made as a jam entry.