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: Destroy Morfuras], Azshara, Classic Era
Classic 1.15.9.70576
Fire Ruby
Binds when picked up
Trinkets
Use: Restores 1 to 500 mana and increases the damage of your next fire spell against enemies by up to 100. Lasts 1 min.(3 min cooldown)
"Unpredictability brings victory, and it brings death."
Sell Price: 27s 50c
Forever Beta 1.60.1.70888
Fire Ruby
Binds when picked up
Unique
Trinkets
Classes: Mage
Equip: Increases damage dealt by fire spells and effects by up to 14.
Use: Refreshes the cooldown of Fire Barrier. The fire damage absorbed by it increases the damage of the next Fire Blast cast within 1 minute by 50% of the damage absorbed.(5 minute cooldown)
"Unpredictability brings victory, and it brings death."
Sell Price: 1g 27s 22c