Kill a tanar'ii in Maldra Keep. Found in the the Icy Passage on the northwest side of the keep.
The tanar'ri is a level 370 Demon. The tanar'ri is immune to: summon charm negative The tanar'ri is resistant to: magic The tanar'ri is vulnerable to: holy silver The tanar'ri has a Saving against Spells and Most Spell Effects modifier of 40. The tanar'ri has a Saving against Paralysis (i.e., Sleep, Web, Slow, etc.) modifier of 15. The tanar'ri has a saving against Magic Orbs, Staves, and Wands modifier of 15. The tanar'ri has a Saving against Petrification (i.e., Abjure, Kill, etc.) modifier of 15. The tanar'ri has a Saving against Breath Weapons modifier of 15. The tanar'ri is affected by the following magical affects: * 'Detect invisibility', cast at level 370. * 'Haste', cast at level 370. * '(Unknown magical affect)', cast at level ?.
For defeating the powers of the Tanar'ri, the Powers have granted thee a Mark. You have been granted The Mark of Durability! You gain 20 archon points! You gain 20 practices!