Divine Hymn

Divine Hymn is a channeled Holy priest multi-target healing ability that heals 100% more outside raid groups. In addition, it grants a 10% increased healing buff to those targets for 8 seconds.

• This ability can easily turn any wipe around, although its 3 minute cooldown means it may be saved as an 'emergency' heal.
• Divine Hymn will proc the Holy mastery Mastery: Echo of Light.
• Sufficient haste will add extra ticks to the ability, increasing total healing generated by 25% at 12.5%, and a further 20% at 37.5% haste. This makes Divine Hymn excellent for use in combination with haste trinkets and effects dramatically increasing the spell's effectiveness, and the speed at which its healing is delivered.
• Priests have 100% protection from pushback while channeling Divine Hymn. This means that priests don't have to worry about damaging attacks foreshortening the spell and wasting its effect. Effects such as stuns and interrupts will of course still stop the spell.
• As with all channeled spells Divine Hymn will not begin to heal until its first tick, 2 seconds after casting. In extremely critical situations, its healing may therefore come too late to save targets.
• Divine Hymn's healing buff is usually applied immediately after the first heal, although this may be a bug. When the spell's targets are constant, Divine Hymn therefore typically heals for at least 7.5% more than the tooltip states.

Divine Hymn is in the The Witchwood expansion for Hearthstone. The flavor text reads: "Taken up an octave, it's highly effective against stained glass golems."