Summons

There is a variety of Summons in Path of Lightning. They differ from character to character, as well.

Phoenix
Satoshi summons a Phoenix, which lights all enemies ablaze with powerful flames, burning them and causing heavy fire damage. The burn deals 10% damage every turn.

Esper's Summons
It summons Esper's shadowy entity, Azeph, to join the field of battle with the rest of the party. This summon lasts for a number of turns equal to Esper's level divided by 10, rounded down. Using it consumes 25% of Esper's max MP.
 * Azeph (Limit Break)