[@Flamelord]
One of my ideas for a Rider was revamping Medea to be a Rider classed Lol. A short thingy i created for her. So anything works really lol. 
[hider=Definitely not OP am I right?]
Helios Megistos ~ Chariot of the Unconquered Sun (Rank A+++, Anti-Fortress)

The reason she's been summoned as Rider, this is the dragon-pulled chariot granted to her by her grandfather Helios. Yet keeping in line with Medea's lack of Dragon-summoning capacity, she cannot call upon this NP herself. Instead it must be given to her by Helios from above at the very moment when she faces a crises equal or greater to when she originally used it: to escape from Corinth after her brutal sabotage of Jason's wedding and death of her children.

The chariot descends from above in a ray of blazing light, even if there is no sun around to produce it. As well as the extreme heat naturally emitted by the chariot, each of the four dragons tethered to it breathe out not your typical fire, but rather shining blasts of pure sunlight, almost akin to solar flares some might say.[/hider]

{edit-Ranked A+++ due to, y'know, Dragons and divine intervention}