Arachnida Ring of Heroism (3.5e Equipment)
From D&D Wiki
Arachnida Ring of Heroism: This Arachnida Ring grants the spider a +2 or +4 morale bonus to attack rolls, saves and skill checks for five rounds once a day. Activating this Arachnida Ring is a free action.
-- Faint Enchantment;CL 5th/11th; Forge Ring; Heroism (+2) or Greater Heroism (+4); Cost 1,600 gp/8,000 gp; Activation: --; Weight: -- lb.; Market Price: 2,100 gp/8,500 gp