Changed from Classic: highlighted lines below differ between the two clients.
Data source: game client item records. Forever build 1.60.1.70888 ; Classic Era build 1.15.9.70576 . View the compiled item record . A beta record does not confirm in-game availability. Verify acquisition in the game and official announcements.
Source: [Mission: Spider Queen's Milk], Blackstone Tower, Classic Era
Classic 1.15.9.70576
Ragged John's Neverending Cup
Binds when picked up
Trinkets
Use: Increases Endurance by 10, reduces damage taken from physical attacks by 5 for 10 min. Also reduces Strength and Agility by 5, and increases damage taken from magic attacks by up to 20.(30 min cooldown)
Sell Price: 81s 44c
Forever Beta 1.60.1.70888
Ragged John's Neverending Cup
Binds when picked up
Trinkets
Use: Endurance increased by 40 points, physical damage received reduced by 20 points for 2.08 minutes. Strength and Agility reduced by 10 points, magic damage received increased by 80 points at most.(10 minute cooldown)
Sell Price: 1g 98s 96c