Elza is fought alongside Rikken and six Pirates in Trial Mode Stage 86 in the Zodiac versions of Final Fantasy XII. It is considered one of the harder stages in the gauntlet. The Fomalhaut (uncommon) and Mithuna (rare) can be stolen from her.
Elza wields a gun and uses Reverse Motes and Reflectga Motes.
The player can also summon an Esper to act as a decoy, as they tend to draw in all enemy attacks.