Just in case anyone can't figure out how a link works (for some reason, I no longer feel such is impossible):

Quote Originally Posted by Prothscar
Amorphic Spikes
20% DEX/INT, 1.0 fTP
It has a Gravitation skillchain property so it can make darkness with Chant du Cygne. It has a palpable attack bonus or a mechanic that functions similarly, which helps a lot since the weak point of Blue Magic is usually the attack value.