1. Hachiman Slicer, 2. Quadra Magic, 3. Mystify/Myst, 4. Relaxing Turtle
Omnislash could possibly be a nickname for the Hachiman Slicer.
A way to sidestep this would be to go ahead and pronounce Aerith closer to Earth. Even though it sounds strange for a girl or any person to be named after our planet.