Discord managed to escape his stoney prison for a short time and with his magic he tempted and corrupted each of the only ponies who could stop him, turning them into the opposites of their Elements.

All except one.

Despite turning all her friends against her Discord had failed to truly corrupt Twilight Sparkle even though he came close.

Now though in the final moment before his recapture once more he has one last trick to try and corrupt the one he failed to.

Control.

Additional Tags: Mind Control