To deal with the stress of heat season during an intense study period, Twilight transforms herself into a stallion. She just didn't realise how turned on she'd end up being from every other mare in the vicinity after.

Things only get worse when she starts getting other mares pregnant.

Kinks: Gender Swap Spell, Mares in Heat, Public Sex, Impregnation/Creampie.

A two part commission for Spamotron!