Tuesday’s hotfix of Hand of Purity left many scratching their heads over the unusual wording of the hotfix. Not surprise, it was hotfixed to prevent raids from stacking pallies to make some heroic mechanics a joke in Throne of Thunder.
Hand of Purity no longer reduces the damage dealt by effects that ignore immunities.
One use was to chain cast Hand of Purity on those affected by Frostbite on heroic Council of Elders (click here for the Council Healing Guide). It was also be size some progression guilds were using HOP for Ignite Flesh on heroic Magaera (click here for Magaera Healing Guide).
There have been some great uses of hand of purity, most notably wind step on heroic Blade Lord in Heart of Fear. It is unknown if it is still usable on heroic 5.0 raids or not yet, since the changes are so new.