The 4 set bonus of The Incarnate Raiment doesnt get consumed.
How it works:
Casting 5x Flash heal & once every 13s causes the Buff to stay up. While the buffs says its -0.1 per stack its actually -4% casttime per stack / 5% haste per stack, which multiplies with haste ( Blizzlike). Since the buff doesnt get consumed when Greater heal is casted, the 4 set bonus can be used on fights with heavy single target damage ( Brutallus, Kel'Thuzad. Azgalor, .... ), making the 4 Set T4 a better choice than Sunwell gear.
How it should work:
Casting Greater Heal Should consume the buffstacks on the Priest.
Source - You need to provide a source as evidence:
Decription:
The 4 set bonus of The Incarnate Raiment doesnt get consumed.
How it works:
Casting 5x Flash heal & once every 13s causes the Buff to stay up. While the buffs says its -0.1 per stack its actually -4% casttime per stack / 5% haste per stack, which multiplies with haste ( Blizzlike). Since the buff doesnt get consumed when Greater heal is casted, the 4 set bonus can be used on fights with heavy single target damage ( Brutallus, Kel'Thuzad. Azgalor, .... ), making the 4 Set T4 a better choice than Sunwell gear.
How it should work:
Casting Greater Heal Should consume the buffstacks on the Priest.
Source - You need to provide a source as evidence:
Set: https://www.wowhead.com/tbc/item-set=663/incarnate-raiment Bonus: https://www.wowhead.com/tbc/spell=37568/greater-heal-discount Tooltip says "your next", making this pretty obvious.
Additional Information: