20 transmog appearances in Halls of Reflection.
Black IcicleOne-Hand
Blackened Geist RibsLeather Chest
Blighted Leather FootpadsLeather Feet
Bone Golem ScapulaOne-HandChestguard of Broken BranchesLeather Chest
Chilled Heart of the GlacierOne-Hand
Crypt Fiend SlayerRanged
Crystalline Citadel GauntletsPlate Hands
Greathelm of the Silver HandPlate Head
Grim Lasher ShoulderguardsLeather Shoulder
Grinning Skull BootsPlate Feet
Hate-Forged CleaverOne-Hand
Hoarfrost GauntletsMail Hands
Legguards of Untimely DemiseMail Legs
Liar's TongueOne-Hand
Mourning MaliceTwo-HandSecond Helm of the ExecutionerPlate Head
Shriveled HeartHeld In Off-hand
Strip of RemorseCloth Waist
Tapestry of the Frozen ThroneCloth Back
Tattered Glacial-Woven HoodCloth HeadSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot Escape from Arthas this reset.