Sublime Ring of Piercing Protection

From the Olthoi Pincers quest introduced in the Pillars Made of Sand event.

Sublime Ring of Piercing Protection
Value: 0 10 Burden Units
A ring of piercing protection, given by Behdo Yii for completing the Warrior quest. Special Properties: Attuned, Bonded, Ivoryable Your level must be at least 70 to wield this item. Casts the following spells: Boon of the Arrow Turner, Invulnerability Other VI Activation Requirements: Arcane Lore: 190 Spellcraft: 250 Mana: 600 Mana Cost: 1 point per 30 seconds.