Yes it is heretical and yes it related to Freemasonry. Don't fall for these "esoteric" and "magical" Christianity groups that pretend to commune with angels and grant you mystical powers. This is kind of the thing that brings someone into prelest, spiritual delusion. This is a dangerous condition to be in, because a person may think he is doing everything right in relation to God but is really a pawn for the evil one. Constant repentance and a good prayer life is the way to bring about God's grace, not playing dress up.