Faction Balance on Season of Discovery is always a hot topic, but Alliance players may be happy to hear that on the Phase 5 PTR, the Horn of Lordaeron is not only back, but now looks to be baseline for Paladins!
Horn of Lordaeron was originally introduced in Phase 1 of Season of Discovery as a rune, believed to be intended to provide Alliance with an alternative to the Horde Shaman Totems, such as, Strength of Earth Totem. As a rune, the uptake of this ability was often Holy Paladins only and was eventually removed in a later phase.
Upon its return, the Horn of Lordaeron appears available for all Paladins to learn, however, it has a 2-minute duration and will not stack with Blessing of Might.