I've played a few time to your game, and the last one ended by : 

Error  cards.lua:152: attempt to perform arithmetic on global 'insideman' (a nil value)

Traceback  cards.lua:152: in function 'nobility' battle.lua:130: in function 'mousePressed' main.lua:28: in function <main.lua:25>

[C]: in function 'xpcall'

The concept was kinda opaque as someone already said : I'm not even sure of what I'm doing after having played it a few times.

Maybe a little bit more of informations and explanations about the card's power and usefulness would have been very helpful for us to understand how to play and finish the game, because I didn't quite well understood the explanations of the differents cards in game.

I had a good run, but died in the end.  I like the core conceit of have 1 card and 4 ways to use it, but I feel like the outcomes for spending cards in different places could be more interesting.  Perhaps the cards need a little more information on them to help inform the player as to what might happen, and allow the player to plan how they might use them.

Game doesnt work