Nonfoil Double Masters Batterskull alternate art artist proof. One of 50 produced by WotC. It's a regular edition card with an unprinted back. These are only available from the artist of the card.

Sketches on the back are a separate add-on and on a first come first served with a very limited queue. Once I start traveling again, it will only be offered for pickup at events. Contact me at postrk@gmail.com for availability.