Just had this spell idea pop in my head, unlikely to be accepted, but why not toss it out there, right?

Ruinous invocation of magic
Aether
Area debilitation(MvW)
The Mage attempts to channel extreme amounts of unfocused aethereal energy into the area, suffusing it with surges and waves so chaotic that it tingles and burns at the magical senses of all other spell casters in the area.

Pulsing(or cyclic) attunement or concentration drain, no wounds.