About as simple as I can make it. The second spell will always be your dualcast.

Basic:
Jolt -> Veraero/thunder (cycle between these to balance your mana)

if a ready buff procs:
Verstone/fire -> Verthunder/Aero (better to go White-> Black or Black -> White to balance manas)

if a ready buff doesnt proc:
Impact -> Veraero/thunder (only applies once you're 66+)

Once at 80/80 mana:
Enchanted Riposte -> Enchanted Zwerchhau -> Enchanted Redoublement -> Verflare(if white>black)/Verholy (if black>white)

Corps a corpse and displacement are meant to engage and disengage for melee combos but you might want to stay around melee range anyways and just use them when off cooldown