 
Vanitas's Sentiment's Keyblade is a Keyblade used by Vanitas's Sentiment in Kingdom Hearts: Birth By Sleep
Appearance
Vanitas's Sentiment's Keyblade looks exactly like Vanitas's Keyblade, except that while the latter was composed of multiple shades of red, blue, grey, and brown, this keyblade is completely black and white. Also, while Vanitas's Keyblade had two half-gears for it's keychain, Vanitas's Sentiment's Keyblade has what looks like a spiky cloud.