(2) Set: Your Holy Shock critical heals now also place a periodic healing effect on the target, healing for 15% of the Holy Shock's heal amount over 9 sec.
(4) Set: Increases all healing you do by 5%.
Bonuses activate at 2 pieces and 4 pieces equipped.
In Wrath of the Lich King it is item level 245, requires level 80 and is named Aegis Greaves. In MoP Classic it is item level 232 and requires level 80.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Conqueror's Aegis Greaves Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Conqueror's Aegis Greaves suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Conqueror's Aegis Greaves is part of the transmog set Conqueror's Aegis Plate (Paladin only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 46181 (46176 to 46186) were usually added in the same batch as Conqueror's Aegis Greaves: the same quest line, zone, vendor or reward set.