For 10 points, identify this Norse trickster god.
This deity caused Hodr (HOE-dur) to kill another god with mistletoe, and then failed to weep for that god in the guise of Thokk. He prevented a wall from being built around Asgard on time by taking the form of a mare and laying with Svadilfari (SVAHD-ill-FAR-ee); that union created Sleipnir (SLEEPnear). He is better known for fathering the Midgard Serpent and Hel. For 10 points, identify this Norse trickster god.
This deity caused Hodr (HOE-dur) to kill another god with mistletoe, and then failed to weep for that god in the guise of Thokk.
Loki