(4) Set: When you cast Prayer of Mending, the initial target is blessed with a Holy Spark increasing the healing done by your next Flash Heal, Heal or Holy Word: Serenity by 50% for 10 sec.
Satin Robe is one of 5 pieces of Satin Battlegear, alongside Satin Gloves, Satin Hood and Satin Leggings and others. Bonuses activate at 4 pieces equipped.
In The Burning Crusade it is item level 115, requires level 70 and sells to vendors for 3g 65s 91c. In Wrath of the Lich King it is item level 115, requires level 70 and sells to vendors for 3g 65s 91c. In MoP Classic it is item level 115, requires level 70 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Satin Robe Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Satin Robe suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Satin Robe is part of the transmog set Satin Battlegear (Priest only). The other 14 pieces:
Blizzard numbers items as they are created, so the named items next to ID 35342 (35337 to 35347) were usually added in the same batch as Satin Robe: the same quest line, zone, vendor or reward set.