One of the ten big
Naga-Kings from
the South of the
primordial oceans
in his peaceful
golden rainbow
body (surrounded
by Naga
Goddesses). 
Also called 
'Master of Tantra'.
He protects the
practitioner from
magical
interferences.
The jewel which he
holds in his hands,
transmits
spiritual and 
magical powers.
His seed syllable is
PHU and his mantra
is OM NAGARADJA
SARVA SIDDHI
HUNG.