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This optional battle against the esper Ultima takes place in the Crystal Peak area of the Great Crystal. To reach Ultima you have to activate a number of switches and teleport via a number of Waystones before finally reaching the destination. The esper has 258,001HP and its Holyja attack can be devastating. Furthermore the battle environment changes every 30 seconds so strategies must be altered accordingly. The changes happen in the following order:
1. HP Sap field. Characters lose 1% of maximum HP every 3 seconds
2. MP Sap field. Characters lose 2% of maximum MP every 3 seconds
3. Attack Command Disabled
4. Magick Command Disabled
5. Technick Command Disabled
6. Item Command Disabled
7. Magnetic Field. Slows the speed of the ATB gauge like witht he battle against Vinuskar.
The process repeats after number 7. When you finally win the battle your reward is the esper Ultima, The High Seraph. Thanks for watching.