[ Misa is such a great girl, truly. You can hear the smile in his already chipper voice. He seems about as enriched in helping her pick as she is about learning. ]

Poison like you mentioned to Eustace is always a good one! I'm a particular fan of binding magic, barrier/shield disintegrations, and anything that reduce an opponent's ability to move or strip them of any enhancement magic they may have cast on them.

Sleep magic will help protect yourself so long as you don't attack them, and while this may not be a possible one to learn here or we aions may simply be immune to it if you can... if you could temporarily lock an opponent's magical ability, even if only for a few seconds, that would be an incredible asset to everyone.