Priest · Discipline · tier 4 · from level 25 · needs 3 points in Improved Power Word: Shield
Soul Warding
+32.8 Power Word: Shield
1/1 · level 60 · per 100 mana
Soul Warding
Rank 1/1
Reduces the cooldown on your Power Word: Shield spell by 4 sec and reduces its mana cost by 15%.
Averages, counting crits and misses, for a level 60 Priest with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.