Ta is the Aspect rune for common quality glyphs. Hence, they are the most commonly found. It has nothing to do with the level of the zone as the Aspect runes are level agnostic. Potency runes are what dictate the level of the glyph and are tied to the level of the zone.
The higher quality Potency runes are around but they are much more rare than Ta, as they should be.
Adramelach wrote: »Yeah... I knew that. Point is, as you get to higher levels, you don't waste purple and gold Potency runes on white-quality, common Aspects. At least, I don't know anyone that does, and from what I read, I've not seen anyone else that does, either.