Here is the initial sketch for Withengar Unbound painted for MTG's Dark Ascension. It is a double sided card. The other side being "Elbrus, the Binding Blade." Notice the demon's missing finger on the original sketch. I intended for the blade on the reverse side of the card that summons the demon to be carved out of that missing claw. In the end the demon had to be redrawn to be as a large as a building so that gag had to be thrown out.
Here is the finished art for both sides of the card: