On Primal Summoning

[PArcher]

Primals don't drain Aether like a black hole and destroy it; they corrupt it and make it unable to rejoin the lifestream like anything else's aether. Its still technically aether, and can still be used by some things (like the Manacutters. They specifically use a corrupted crystal engine, and most of the corrupted crystals we have right now are from when Bahamut went on rampage. Others can be found after a Primal summoning...), but the natural order rejects it (its basically poison to the Lifestream now)


EDIT: Hmm...maybe not worded the best. But basically, Primals consume aether and corrupt it. Corrupted aether can't be used by natural things or return to the lifestream, and thus manifests as corrupted crystals after a Primal is banished (or just goes through an area). "Natural" aether is recyclable, moving between living things, the world (ambient aether...the stuff CNJ/WHM use to cast spells) and the lifestream in cycles.