Juno's Gladius

"introduction"
The gladius of Juno was a roman sword owned by Hera's roman form : Juno. When Jason grace's magical coin, Ivlivs, was destroyed in a quest to save Hera from Gaia. Hera felt responsible for Jason's loss and being his patron, gave Jason her sword,

"disadvantages compared to ivlivs"
Since Jason no longer has a lance or weapon of similar length, he likely has no way to control and aim the bolts of lightning that he can call down from the sky. It is possible however that with practice he can direct lightning without the use of a long weapon, but given the amount of time Jason has had to hone his powers, it is unlikely.