WowAce

To obtain this pet you have to find  Strange Humming Crystal that can be dropped from  Kirin Tor Chest.
http://www.wowhead.com/item=141348/wondrous-wisdomball#comments

["Strange Humming Crystal"] = { cat = LEGION, type = PET, method = USE, name = L["Strange Humming Crystal"], spellId = 226682, itemId = 141349, items = { 151470 }, chance = 100, creatureId = 113827, sourceText = L["The quest starter item for Wondrous Wisdomball"], coords = {{m=1014,x=33.6,y=48,n=["Warmage Silva"],f=2}}, },