Step 1. Normal Summon Genex Undine
Step 2. Activate Genex Undine's effect, sending Crystron Rosenix to from the deck to the graveyard to add Genex Controller to your hand
Step 3. Banish Crystron Rosenix to special summon a Crystron Token
Step 4. Link Summon Link Spider using the Crystron Token
Step 5. Activate Link Spider's effect, special summoning Genex Controller from your hand
Step 6. Link Summon Crystron Needlefiber using Link Spider and Genex Controller
Step 7. Using Needlefiber's effect, special summon Crystron Citree from the deck
Step 8. End the Turn
Step 9. Activate Needlefiber's effect during the opponents turn, Synchro Summoning Crystron Quandax from the extra deck
Step 10. Using Quandax's effect, Synchro Summon Crystron Quariongandrax using itself, Genex Undine, and Crystron Citree