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Paladin
Faith, steel, and the Light that judges.
Paladin is the class Blizzard has detailed most. Seals are no longer consumed by Judgment. Holy Strike arrives at level 6. Consecration is baseline at 20. They still have no interrupt and reach a taunt through Seal and Judgment.
Specializations
Holy
Mend allies in the Light. Holy Shock on a 10-second cooldown, plus Voice of Truth, Reverence, Infusion of Light, and Light’s Vigil.
Protection
Seal of Fury (fast weapons, small absorbs, Judgment taunts while the Seal is active), plus mana from absorbs and blocks.
Retribution
Stronger melee identity. Vindication also increases the Paladin’s Attack Power, with Seal Twisting via Twist of Light.
Races
Forsaken paladins start from the Forsaken Kingdom story: former paladins learning the Light in undeath, based at Bandarion Keep in the Whispering Wood of Tirisfal Glades.
At 60 they get an epic mount quest in the name of Retribution. Alliance paladins claim theirs in the name of Redemption.