[quote=@Fractured]
<Snipped quote by Vacare>

There are ways to transfer mana to others, like using potions. But for us, magic is a destructive force that can be used regardless of whether a caster has mana, and mana is a protection that allows us to cast without being harmed. 
*Points to your eyepatch*
So that's made to suppress sudden magic surges?
[/quote]

I explained it to Lily earlier...  Basically, I'm like a human sponge for magic... I absorb way too much from surroundings. I'm a danger both to myself and people around me. The seal allows me to sort of get a better control of it. Think of it like a nozzle at the end of a hose. That sort of thing.