Discipline Priest revolves around preventing damage by shielding and reducing damage with Pain Suppression, while still having some good direct healing potential.

Rotation for Discipline Priest Wotlk

Discipline Priest Priorities

Power Word: Shield (Shield to protect from incoming damage) > Penance (Strong quick heal) > Pain Suppression (40% damage reduction on the target) > Flash heal (Quick heal) = Greater Heal (For heavy intensive healing, slow cast big heal) = Binding Heal (Heals the priest and the target) = Divine Hymn (Large AOE heal but on a 8 minute cooldown) = Prayer of Healing (Slow cast AOE Heal) = Prayer of Mending (Heal that jumps from target to target, uncontrollable) = Renew (Keep on targets who take constant damage)

Tips

The most important job is to not let the tanks or any healer die, if a DPS dies the fight can still go on, without a tank or healers it’s another matter.

At the end of a cast, an instant spell can be cast without occurring GCD, this is true for every cast/instant sequence, should be used to maximize healing.

Use CDs when there is barely any movement or crowd control effects to maximize healing.