If they add glowing effects then it needs to be minimal imo. The showy stuff you see in games like WoW doesn't fit the world as ppl have already stated. I could see them getting away with runic like effects. Something like Runes on a swords blade lighting up when you preform a TP based skill, or a light glow suffusing a wand or staff while casting Tp based spell. But when not in use or when auto attacking or standard weapon skills/spells the weapon should appear as any other weapon.