Black Ocean: Convocation Magic Mug
Show the universe that no measly science is a match for your sheer force of will with this magic Convocation mug. Make the Convocation logo and a favorite wizardly quote appear right before your eyes (well, when you add hot liquid), and impress your friends with your magical prowess.
At first glance this is just an ordinary 11oz black ceramic mug, but thanks to special thermal coating the design appears on them when you fill them with hot liquid. Not microwave-safe, recommend hand washing for best product durability. Do not go from cold water immediately into boiling water and vice versa, as it may cause the mug to crack.