Equip the following Geos to summon an Ultimate Form Spectrobe. Note: It will replace your combo attack, and the battle will end after it is used. Using it will automatically terminate Vortexes. It cannot be used in Sequence Battles. To obtain the Geos, perform the corresponding tasks:
HOW TO OBTAIN
Cyclone Geo: Zorna
Complete Sequence Battle Level 1.
Flame Geo: Tindera
Unlocked during the battle following the one against Dolgon and Dolgan.