Backstep

Backstep is an active skill usable and shared by all Archers, Priests, Sorcerers and Lancers.

There are four versions of the skill:
 * Backstep (Archer)
 * Backstep (Priest)
 * Backstep (Sorcerer)
 * Backstep (Lancer)

Common feature of skills are that it is iframe. Archer and Lancer skills use resolve and can be cast as many times in resource limits. Priest's and sorcerer's is single use with cooldown.