Ioun Stone of Perfect Language
This white and pink rhombic prism makes you more persuasive and gives you a knack for language.
Head Slot 325,000 gp
You gain a +5 item bonus to Bluff, Diplomacy, Intimidate, and Streetwise checks. In addition, you can understand any spoken language, and when you speak, all creatures hear your words in their native language.
Power Daily (Free Action)
Trigger: You make an Insight check.
Effect: You treat the check as if you rolled a natural 20.
Published in Adventurer's Vault, page(s) 143, Mordenkainen's Magnificent Emporium, page(s) 70.