So what you're saying is that the Machine Cult lures you into joining its dogmas of absolute efficiency.

Though, that particular ability does make it a great combo with any other faction. Red + Whatever works fantastically.

Red + Green: lots of card draw and heavy damage every turn
Red + Yellow: a good amount of card draw, damage, and discarding every turn
Red + Blue: all the healing
Pure Red: BEHOLD THE SWARM