Magic: The Gathering - The Spell Thief #1

Planeswalker Dack Fayden has followed Sifa Grent into a mysterious plane, where a Titan's castle looms invitingly in the distance. Entering the castle in search of Sifa, Dack is soon imprisoned by the Titan and added to his vast collection. Dack must find a way out before the trail to Sifa runs cold and he remains the Titan's prisoner forever!