• Added DSS support to view the mod's achievements and credits.
  
• Added costumes for Mastema's Wrath, Bloodsplosion, Corrupt Heart, and Book of Jubilees.
  
• Resprited Mantled Heart and Ring of Shadows.
  
• Tweaked some other item and costume sprites.
  
• Tainted Mastema's treasure room icon is now purple instead of red (requires MiniMAPI).
  
• Raven Skull's Abyss locust now consumes pickups and increases in damage.
  
• Added some global functions for any modder to use.

Fixed Mastema's Birthcake not working and expanded its effect to more special rooms.

Fixed Dr. Fetus fear bombs sometimes having homing when the player doesn't have Sinister Sight.

Removed game version check due to recent update. Use this mod on older versions of the game at your own risk.

• Sinister Sight now additionally grants +2 range up.
  
• Fixed Mastema's Wrath not accounting for enemies that initially spawn underground or similar.

• Bloodsplosion changes:
  
  • Lowered its quality to 3.
    
  • The size of the creep is now dependent on the size of the killed enemy.
    
  • Having more than one copy now gives a 100% chance for enemies to explode.
• Fixed dice from Dice Bag causing Desecrated Heart to get used when it shouldn't.
  
• Fixed Mastema's Birthcake appearing when it shouldn't (potentially, I have no way of testing).

• Corrupt heart now gives +0.25 damage up for each full black heart you have.
  
• Updated Shattered Soul's sprite.
  
• Fixed an error when Sacrificial Chalice gives black locusts as a reward.

Fixed misspelling on character select menu.

Fixed certain items not handling stat changes correctly.

• Both characters now have co-op support. Prices will adjust based on the closest player to the item.
  
• Items that cost broken hearts now visually look similar to devil deals.
  
• Reworked how it's determined which items cost broken hearts for Tainted Mastema.

• No longer has the Sanguine Bond spikes in devil rooms or gains a Holy Mantle shield from buying items in angel rooms. Instead, angel room items are no longer choice pedestals.
  
• Updated stage portrait.

• Also no longer has the Sanguine Bond spikes by default.
  
• Can now lock himself into devil deals.
  
• All treasure rooms now have 2 items by default, one of them being a blind item. Both items can be taken.
  
• Lowered the chance of devil items appearing in treasure rooms from 50% to 33%.
  
• Items in shops now only cost broken hearts. Pickups are surrounded by spikes.
  
• In Greed Mode, half soul hearts have a chance to spawn instead of coins when playing as Tainted Mastema.

• Bloody Harvest and Twisted Faith now properly synergize with vanilla items that affect item prices.
  
• Infernal Covenant now grants its item in the form of a Lemegeton wisp on use. Then once it's successfully charged, the actual item is given permanently.
  
• Taking an item that costs broken hearts now counts towards increasing the chance of a Ritual room spawning.
  
• The chance for a Ritual room appearing now starts at 1% for Tainted Mastema instead of 5%.
  
• Updated mod thumbnail.
  
• Fixed Desecrated Heart being usable while DSS or MCM is open.
  
• Fixed a crash when either character enters the treasure room while holding Lawful from Deliverance.