[Dagger's magic power/4 + difference between Daggers' Level and Monsters' Level]
[Full animation = (30 + # of Amethysts)% of enemy's HP]
[Short animation = 2/3 of Full animation formula]
As you travel through the game, Garnet will receive a number of different Eidolons. Generally the stones required for these Eidolons are found through story events, but sometimes they are found through side-quests. To get them all, you must look everywhere!