From Riki Tat Tiki:

"This Severed Wolfhead: Lava Fenrir Edition is inspired by Norse mythology. Fenrir will devour the sun and bring about Ragnarök.

This mug was sculpted then molded in order to make 75 mugs of the Lava Fenrir Edition. When the mug is still raw clay, I hand carve the lava cracks and patterns unique to each Lava Wolfhead. Each mug is then hand glazed with a mixture of underglazes and specialty glazes. Not one Lava Wolfhead will be the same. The Lava Wolfhead that you receive from purchasing online will be at random. The mugs will be carved similar to the one shown in the picture. No returns or trade requests will be accepted.

The mug comes with an art card containing a specially crafted cocktail recipe called 'Odin's End' by Freaky Deaky Tiki. From the legend, Fenrir fights against Odin and ends up swallowing him whole.

Size: 21 fl. oz, 4.5 inches x 7 inches (H X W)"