Dean and Rainbow Picture

I recently had an idea for a crossover fanfic between MLP:FIM and Supernatural where Sam and Dean are forced to summon the ponies in order to use the Elements of Harmony to defeat a Discord tulpa. In mythology the chimera (Discord is as close to a chimera as necessary) is killed by Bellerophon on the back of a Pegasus with a lead spear. So I thought it would be appropriate for Dean, who hates flying, to have to be the one to stab Discord on the back of Rainbow Dash.
In the Rainbow Facory...
Hermes the Cutie Mark
Dean and Rainbow
Roland Vannerson
AT - Dan and Dani