41 transmog appearances and 1 mount, pet or toy drop in Ulduar.
BladetwisterOne-Hand
Boots of the ServantCloth Feet
Chestguard of the LasherMail Chest
Conqueror's Aegis LegguardsPlate Legs
Conqueror's Darkruned LegguardsPlate Legs
Conqueror's Deathbringer LeggingsCloth Legs
Conqueror's Glaivedancer LegplatesLeather LegsConqueror's Kirin Tor LeggingsCloth Legs
Conqueror's Nightsong TrousersLeather LegsConqueror's Pants of SanctificationCloth LegsConqueror's Scourgestalker LegguardsMail LegsConqueror's Siegebreaker LegguardsPlate LegsConqueror's Steelfist LegplatesLeather LegsConqueror's Terrorblade LegplatesLeather LegsConqueror's Worldbreaker KiltMail Legs
Drape of the Sullen GoddessCloth Back
DreambinderTwo-Hand
Gauntlets of Ruthless ReprisalPlate Hands
Gloves of Whispering WindsMail Hands
Handguards of RevitalizationPlate Hands
Ironbark FaceguardPlate Head
Leggings of the Enslaved IdolCloth Legs
Leggings of the LifetenderLeather Legs
Legplates of Flourishing ResolvePlate Legs
Petrified Ivy SprigRanged
Serilas, Blood Blade of Invar One-ArmOne-HandThe LifebinderTwo-HandTunic of the Limber StalkerLeather Chest
Unraveling ReachTwo-Hand
Valorous Aegis HandguardsPlate HandsValorous Darkruned GauntletsPlate Hands
Valorous Deathbringer GlovesCloth Hands
Valorous Glaivedancer GauntletsLeather HandsValorous Gloves of SanctificationCloth HandsValorous Kirin Tor GauntletsCloth Hands
Valorous Nightsong GlovesLeather HandsValorous Scourgestalker HandguardsMail HandsValorous Siegebreaker HandguardsPlate HandsValorous Steelfist GauntletsLeather HandsValorous Terrorblade GauntletsLeather HandsValorous Worldbreaker GlovesMail HandsSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot Freya this reset.