Strength of Soul (priest ability)

Strength of Soul was a passive specialization ability for Discipline priests, available at level 52. It caused the priest's Heal, Greater Heal and Flash Heal to reduce the duration of any Weakened Soul debuff on the target by 2 seconds.

Tips and tactics

 * With Strength of Soul's potential reduction to the Weakened Soul debuff, it is only necessary to cast at most 5 eligible heals on a target before it becomes possible to immediately shield them again. This allows priests to use Power Word: Shield far more often.
 * In emergency situations, by chain-casting Flash Heal on the target the priest can therefore use Power Word: Shield every 6-7.5 seconds (depending on haste), instead of every 15 seconds. Since Power Word: Shield's absorb is far larger than the healing provided by Flash Heal, in periods of heavy damage this can allow the priest to outstrip incoming damage, making the difference between victory and a wipe. It also allows the priest to save mana and benefit from Borrowed Time (priest ability). When pushback is a factor, Power Word: Shield is even more advantageous.
 * This is even more beneficial when the priest is the target in need of healing, due to Power Word: Shield's pushback protection. Priests can also run while casting Power Word: Shield, and will not be dazed while shielded.