Quote Originally Posted by Unregistered View Post
About the Number of Exchange Summons...

I've heard that the Boss Monster in the zone has a small chance of dropping the Summon so you can/will have to farm there to get to max unlock.
If anyone could confirm this, that'd be great, I tried a few times but stopped bothering and went back to farming SP quests since the stage with the exchange eidolons is pretty bad in terms of material drops and exp.