Primary stat increasing augment runes are returning in The War Within, with the Crystallized Augment Rune. Hopefully they won't be quite so rare this time around! First added in Warlords of Draenor, Augment Runes are consumables providing a minor increases to strength, intellect, or agility, similar to food buffs in not normally persisting through death but with the added downside of being much less widely available.