After their glorious battle, Iolaus returned home, his new prize in tow: the deadly Hydra's Wings, a mystical decoration that boosts it's wearer's abilities significantly. Celebrate in Iolaus' victory, and harness the power of the Hydra itself!

Here's the stat from that item:
* Hydra's Wings - Min. Level 70, Attack Power: 550-650, Vitality: +100, Defense: 500.