Quote Originally Posted by Roxas_Andrade View Post
I use this macro:

/micon "Fey Illumination"
/pac "Fey Illumination"
/ac succor

As Fey Illumination is instant, Eos casts it and you charge your succor. When you use the magic, you heal for 1000 with a crit.
That is about as good as leaving Eos on Sic. Fey Illumination is very potent (especially in an 8-man with a WHM) and it has a 120 second cooldown. It should be saved for when it is truly needed.