The Grixis color identity of black, blue, and red has access to some of the best card draw effects, great control options, and stellar removal
(If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.) Vigilance Each other creature you control that's a Cat, Elemental, Nightmare, Dinosaur, or Beast gets +1/+1 and has vigilance
Especially if you played a bunch of Bloomburrow Draft or Sealed, you probably have a halfway decent start on the creature base you need for a deck like this
Carnage Interpreter Carnage Interpreter may be one of Rakdoss most efficient creatures overall
Because this doesn't hurt planeswalkers, it has enhanced value in planeswalker heavy brews like Superfriends builds
Just as a reminder, warp allows you to cast a creature for a reduced cost, but it then gets exiled at the end of the turn