Magister Hagur is an old school o9a guy, who is about 80-years-old at the moment. He’s been around o9a, since the early days. The “Sinister Pathway Triangle Order” is Magister Hagur’s o9a Nexion, based in Belgium.
Magister Hagur is a prolific writer of o9a stuff. I highly, highly recommend his writings to anybody new to o9a or curious about o9a because Magister Hagur’s approach to o9a is Rational and not goofy.
His stuff can be found here: