The rarity of Reminiscence of Dreams is Legendary, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Reminiscence of Dreams is a skin for Puck. The skin was added to the game on June 23, 2014, it was created by DotaFX.
Reminiscence of Dreams has been recently added to the game, which makes it rather popular with the game community.