Mage · Arcane · tier 3 · from level 20

Arcane Geometry

Rank 2/2

Increases the range of your Arcane spells by 6 yards.

Doesn't change the damage or healing of any Mage spell.

Averages, counting crits and misses, for a level 60 Mage with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.