Lilith

Lilith is a Warlock from the sands of Saladin in the deep south. She was the catalyst that set in motion the sealing of alchemy to avenge her people that were captured and experimented on by the Wood Elves of Meridia who carried out raids on the Warlock villages. the Elves of the Meridian forest committed heinous crimes towards the relatively peaceful Warlock race and Lilith who had escaped the slaughter promised revenge. 
A powerful queen and succubus, the wood elves knew and feared the retribution she would bring with her ability to control the fiends of darkness through means of blood magic and thus they created a magic barrier around the forest that kept the Queen of the desert and her enemy horde out. Lilith surmised that by sealing away the alchemy in the world, the barrier over Meridia would break and she would she be able to unleash an enemy of darkness upon the forest. Lilith, with her ability to shapeshift was able to manipulate the King in the east, Mateusz and use him as a puppet to help her cause.
She inflicted a fatal blow to the dragoon, Darnell Tassinari who uncovered her plot but was unable to stop her and with the magic cut from it's source Lilith waited for the magic barrier to break. Waiting nearly half a century, she was finally going to have her revenge at the expense of the world which was facing impending doom due to the source of life being cut. Her revenged was thwarted however by the legacy of the last dragoon passed which passed to his descendant. Darius, the chosen bloodrider to the last winged beast was able to slay her and unleash the seal on alchemy and thus saving the world.