1. Pre-pot and cast mirror image (+ on use trinket) at 2sec left of pulltimer
2. Cast frostbolt and water jet half way into the cast
3. Cast another frostbolt for 2nd FoF
4. Pop crystal + Icy veins
5. Use your 2 FoF from the water jet
6. Pop Frozen orb
7. Use 1 Ice nova while frozen orb is travelling
8. Pray that you get FoF procs from frozen orb and continue to spam ice lances/ice nova/FFB until crystal is gone

Now you just continue will regular rotation (frostbolt x10000) until CDs are up again