Actually you can learn Nova from Nemesis as well as Ultima Weapon. Next time mark you're answer in spoilers though.

1. qwertyxsora_________12
2. Firo Volondé__________10
3. Little Blue____________6
4. ReloadPsi_____________5
6. abrojtm______________4
7. Renmiri_____________1
7. tidus_rox____________1
7. d£v!l'$ ph0£n!x________1
7. cally777______________1
7. Tavrobel______________1

Q20. What is Ifrit's overdrive called?