THOR (1962) #358

Lorelei, at the behest of Loki, bewitches Thor; Beta Ray Bill and Sif face down the GLF until the group learns that they are working for a Russkie (Titanium Man) and turn on him; Thanks to a little spell by Heimdall, Lorelei falls for Loki. Appearances by Volstagg. Hogun, Fandrall, and Heimdall.