Enigma Sages are not really part of the engine, yet they are a very important unit of the Eternal Council. Enigma Sages are the Eternal Council’s main combat unit. If you just need a good combat unit, Sages are very capable. They do quite a bit of damage and their ability has many perks like splitting damage and allowing you to ignore certain defensive abilities. Edia can’t carry all the weight of the Eternal Council at all times and Enigma Sages are your versatile combat unit to assist her on offense. You are probably doing fine in most situations to summon an Enigma Sage. They don’t need setup or a special condition, it doesn't matter if you need range, melee power, or are against small units or big units. Enigma Sages are not only good but are also one of the most versatile combat units in the game.