Dash

Effect
Air Attunement affects the move speed bonus and duration.

Stacking and charging glyphs improve the focus cost, move speed bonus, and duration.

Limits
Up to two move speed bonus effects can be active at a time. For example, if Berserker's Stance is active, Dash will cancel Sprint, and vice versa.

Move speed bonuses are half as effective in combat, but return to full effect out of combat.

External Reference

 * Magic, Combat, and Crafting Skills on the Shroud of the Avatar Forums