Nightwalker

Chromatic
Nightwalker has protection from spells and permanents that share a color with it.
If Nightwalker is black, it has "{b}{b},{t}: Target
player discards two cards at random."
If Nightwalker is red, it has "{r}, Discard a card: Nightwalker gets +2/+0 until end of turn."
If Nightwalker is blue, it has flying and "When
this creature deals combat damage to a player,
draw a card."