In the original concept, the card wouldn't come back before exhausting the deck, but I changed it because it felt too restrictive and there was turn where you wouldn't had any decision to make. And having only three cards who limits options a bit too much
Most of the healthbar being useless is indeed a big problem of the game current design, but I have other ideas to fix it.
Thanks for the feedback anyway, I really appreciate it ! And I'm glad you liked the deckbuilding part, I'm pretty proud of it x)