Board Thread:Antaeus' Arena: Audience Chamber/@comment-1515612-20150821065646/@comment-5126368-20150821164719

I think I have to switch from Poseidon to Hades.

Hades now has the Sword of Hades (Stygian Iron sword made from one of the Keys of Hades).

It was mentioned in the short story: PercyJackson and the Sword of Hades that having that sword would tip the scales of power between the Big Three.

The Keys of Hades has the ability to seal or free someone from the Underworld (source: riordan.wikia.com/wiki/Keys_of_Hades) even an immortal. In the Sword of Hades, it was mentioned that Kronos planned to steal the not-completed-yet Sword to free his brother Iapetus (having Ethan and Melinoe as the thieves, and though the act was busted by Nico, Percy and Thalia). Thus, making him more powerful than the other two because having the Sword would enable him to seal Zeus and Poseidon in the Underworld virtually forever.