Crest Side Effects

Crest Side Effects
Power comes at a price, as nothing is limitless.

This includes the power of the Crests, minor and major alike no matter what those with you would have you believe.

Mercedes
Mercedes is prone to short fevers, her ambient body temperature running low, and joint pain. She’s lived with it since she’s started to hone her recovery magic. Side effects grow worse when she pushes her magic to its limits or overworks herself physically. After particularly taxing battles she is prone to bouts of vertigo and nose bleeds.

Ingrid
Ingrid, more prominently in the war phase, suffers from joint pain and stiffness as a result of the use of her Crest, exacerbated by the use of a Relic weapon. She is more sensitive to extreme weather changes. After long or intense battles she will often times need to soak in hot water, or spends longer amounts of time in the sauna to loosen her rigid joints.

Lysithea
We hear from Lysithea in-game how exactly having two crests affects her. Her life-span is shortened, and I believe we can also assume that her albinism is also an effect of the experiments done on her.

In her case the Crests she possesses are diametrically opposed, one being the Crest of Charon is a Crest focused in ending life while the Gloucester Crest is one that is focused on preserving life. Given this Lysithea does suffer from chronic migraines, as well as other joint pain. The use of either of her Crests can be taxing given that a person should not possess more than one.