as someone who enjoys both rogue likes and deckbuilders, this is a pretty fun game.
however i noticed there may be a bug regarding relics/abilities. It seems (on the browser version) that once i get an ability, it cannot be gotten again in following playthroughs. I have had this happen with several relics, including both the "?" event ones and the boss rewards ones. in following playthroughs when i choose the ones I chose in previous playthroughs, the icon does not show up, signifying i have it, and the abilities do not go off (off the top of my head i can think of the Hucow healing one, and the two beast ones related to gaining strength (start of battle or from damage), i know there are others, but those are the ones i could actually test if the abilities happened without the icon.