I'm thinking about getting the Eylhaar's Feast spell but I would like to get some advice on the smartest ways to use it. How much mana are you using per cast and how many times do you use it before it eats up too much spirit health to make it not worth it? I would like to avoid getting bitter feast since I don't think it would be good to stun myself in the middle of combat, which is when I would mainly use this spell.