I made some changes to how perks were selected, and added a new "Luck" stat that affects a few things in game.

• Perks are now grouped into four rarities: Common, Uncommon, Rare, and Unique.
  • Common, Uncommon, and Rare perks can be rolled when you collect three knowledge fragments. One of the three perks options you see is guaranteed to be Uncommon or Rare.
  • Unique Perks cannot be rolled naturally and are only used by some of the starting character aspects.
  • Common perks show up blue, Uncommon are grey, and Rare are purple.
• Player's now have an additional Luck stat
  • Increases to Luck will make enemies more likely to drop coins.
  • Increases to Luck will increase the odds of seeing Uncommon and Rare perks.
• Clovers can now be bought in the shop for 8 gold and will slightly increase Luck
• Some perks have been changed to now also increase your Luck stat
  • Perfection (Common): Slightly increase power, shooting speed, movement speed, and luck.
  • Piety (Rare): Lose all gold. Gain power and luck for every 5 gold lost.

Because of these changes I've also added a few new perks to fill out some of the tiers better. I also slightly reverted some of the damage nerfs I made to a few of the perks, since their new rarities should make them a bit less common.