Magicninja seems to be playing the fifth mode of that scale, descending in intervals of 2nd; and finally resolving to C.

Fifth Mode=[G-G#-B-C-D#-E]
the triad built on the first note of this mode would be:
G aug5th Triad=(G,B,D#)



....G aug 5th
e----------------3--4---------------------------------
B-----4----------------4--5----------------------------
G-----4----------------------4--5----------------------
D-----5----------------------------5--6-----------------
A-----------------------------------------6--7---------
E------------------------------------------------7--8--