S Tier

WhirlwindWarrior AoE fillerMulti-target spin. Primary AoE filler at level 1.SlamWarrior boss rotationSingle-target slam; M_ability 1.25 in DPS calculations.Holy BarrierTank tauntTank taunt. Drops DPS to 0; provides mitigation.Universal HealBest heal in gameBest heal in the game. Required for any serious Healer build.Enhanced Inner Rage / FocusEndgame enhancerLegendary class enhancers. Become mandatory at Insane difficulty. Inner Rage adds 30% penalty when missing at high tiers.

A Tier

Blue FireballMage single-targetSlight damage boost vs single target. Level 1 unlock.InnervateMage heal unlockUnlocks baseline Mage healing.Lightning StrikesMage single-target spikeM_ability 1.30 in DPS calculations. Highest single-target spike among Mage abilities.