This is like a rash and my first post...
So, I am very new to building patches (I have a DigiTech GNX3), but can anyone out here give me some pointers as to what techniques or guitar effects are used for the initial segment of the song Lazarus by Porcupine Tree.

I can guess Chorus, Delay, and volume swell using expression pedal may be.. But I am far off sounding the same as the original track...any help will be much appreciated