Ravnica Allegiance

Skarrgan Hellkite | Creature | Dragon | Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.) Flying {3}{R}: Skarrgan Hellkite deals 2 damage divided as you choose among one or two targets. Activate only if Skarrgan Hellkite has a +1/+1 counter on it. | Svetlin Velinov

Captive Audience | Enchantment | | Captive Audience enters the battlefield under the control of an opponent of your choice. At the beginning of your upkeep, choose one that hasn't been chosen — • Your life total becomes 4. • Discard your hand. • Each opponent creates five 2/2 black Zombie creature tokens. | Dmitry Burmak

Rakdos, the Showstopper | Legendary Creature | Demon | Flying, trample When Rakdos, the Showstopper enters the battlefield, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails. | Viktor Titov

Domri, Chaos Bringer | Legendary Planeswalker | Domri | +1: Add {R} or {G}. If that mana is spent on a creature spell, it gains riot. (It enters the battlefield with your choice of a +1/+1 counter or haste.) −3: Look at the top four cards of your library. You may reveal up to two creature cards from among them and put them into your hand. Put the rest on the bottom of your library in a random order. −8: You get an emblem with "At the beginning of each end step, create a 4/4 red and green Beast creature token with trample." | Zack Stella

Ravager Wurm | Creature | Wurm | Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.) When Ravager Wurm enters the battlefield, choose up to one — • Ravager Wurm fights target creature you don't control. • Destroy target land with an activated ability that isn't a mana ability. | Svetlin Velinov