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: Things the Light Won't Tell You, Hammer of Doom, Classic Era
Classic 1.15.9.70576
Royal Seal of Eldre'Thalas
Binds when picked up
Unique
Trinkets
+10 Fire Resistance
Classes: Priest
Equip: Increases the healing effect of spells by up to 33.
Equip: Regenerates 4 mana every 5 seconds.
"Blessed by Sindra Guling."
Forever Beta 1.60.1.70888
Royal Seal of Eldre'Thalas
Binds when picked up
Unique
Trinkets
+15 Nature Resistance
Classes: Priest
Equip: Increases the healing effect of all spells and magic effects by up to 22 and damage by up to 7.
Equip: Spirit increases by 16 when in caves or underground areas.