Mayashiva

(“illusionary Shiva”) In Hindu mythology,
a demon named Jalandhara assumes
the form of the god Shiva in an attempt
to trick Parvati, the goddess, into having
sexual relations with him. Jalandhara
has been unable to conquer Shiva on the
battlefield, so he hopes that he can
diminish Shiva’s power by compromising the faithfulness of his wife.
Jalandhara comes to Parvati in Shiva’s
form, but she is so suspicious that
Jalandhara is unable to fulfill his desires.
Jalandhara’s power is eventually broken
in the same way, when Vishnu (in the
form of Jalandhara) manages to seduce
Jalandhara’s wife, Vrnda.