Arcane Lore

Arcane Lore gives spell critical chance and critical multiplier bonus to all spells.

Lesser Arcane Lore
+6% spell critical chance 	+1.50x crit multiplier

Arcane Lore
+6% spell critical chance 	+1.75x crit multiplier
 * Elfcrafted Robe and such

Greater Arcane Lore
+9% spell critical chance 	+1.75x crit multiplier
 * Skiver
 * Green Blade
 * Blue Dragonscale Robe
 * Noxious Embers and such

Note
Major and Superior Arcane Lore currently does not exist in game. However, Rahkir's Sash and Rahkir's Ring set bonus has +2.0x crit multiplier bonus to all spells. By having both Greater Arcane Lore and this set bonus, you virtually benefit from Major Arcane Lore, which is +9% and + 2.0 multiplier.