That's a bunch of things, actually: it's a PitchFactor set to 'Diatonic' (and I can change the interval of transposition with a pedal), the 8000 set to Reverse Delay & Reverb, with the Reverse Delay being pitch-shiftable (again, with a pedal), and finally (in the middle of the signal chain) is Guitar Rig's PsycheDelay, set to 'forward' and an octave higher–so everything you play comes back twice as fast and one octave up.

Hope this helps!  And thanks for the kind words.