You are given a skill point after beating each blind. Skill points can be spent leveling up your skills which will grant you advantages based on x in y checks, skills are leveled up on the view deck screen
All skills start at lvl 0 and have a lvl cap of 5
In theory (not going to go so far into the concept for now as I'm only writing this to procrastinate studying) holding certain jokers can give a boost to specific skills
INTELLECT : Skills related to gaining information
Logic - [lvl] in 5 chance to flip cards that have been drawn face down
Encyclopedia - Each upcoming card to be drawn has a [lvl] in 5 chance to be revealed, max amount of cards revealed capped at [lvl]x2
Rhetoric - Each booster pack in the shop has a [lvl] in 5 chance to reveal it's contents when hovered over
Drama - After beating each round, [lvl] in 5 chance to reveal the next [lvl] boss blind/s
Conceptualization - [lvl] in 5 chance to reveal the contents of the rerolled shop when hovering over the reroll button
Visual Calculus - At start of round, [lvl] in 5 chance to reveal the [lvl]x2 cards at the bottom of your deck
PSYCHE : Skills related to playing cards, being able to play cards and obtaining stuff easier
Volition - After playing a hand, [lvl] in 10 chance to gain +1 hand for the round, this effect can trigger [lvl] times in a round
Inland Empire - After playing a hand, [lvl] in 10 chance to gain +1 handsize for the round
Empathy - After playing a hand, [lvl] in 5 chance to score unscored cards
Authority - After drawing a debuffed card, [lvl] in 5 chance to remove debuff, additionally, if played hand would not score, [lvl] in 5 chance for it to score
Esprit de Cirque - After exiting shop, [lvl] in 5 chance to create a random common joker (must have space)
Suggestion - After entering shop or rerolling, [lvl] in 10 chance to make a random item in it free
Continued in comments