You attack with the stuff that makes up 60% of your body mass, covers 70% of the Earth's surface, and falls from the sky on an regular basis: water. Just plain old reliable water. It may not scream "explosive devastation" like fire and lightning does (until you see the water-mage drop a tsunami on an entire battalion of enemy mooks), but you can't trump water's versatility and availability. Flood 'em, drown 'em, frost 'em, steam 'em, wash 'em, whatever. And no, we don't use that water to heal someone, that's for the White Mage. Use it to kill someone! May overlap with Elemental Shapeshifter.