Flying, trample {B}, Sacrifice another creature: Target player mills three cards. Pay 1 life: Add {C}. Spend this mana only to cast a spell from your graveyard. 6/6
Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.) Whenever a player casts a spell, sacrifice a creature. 8/8
As Engineered Plague enters, choose a creature type. All creatures of the chosen type get -1/-1.
Destroy up to three target creatures with toughness X or less. If X is 10 or more, return all creature cards from your graveyard to the battlefield.
At the beginning of each player’s upkeep, that player loses 2 life and draws two cards.
When you play Temporal Extortion, any player may pay half his or her life, rounded up. If a player does, counter Temporal Extortion. Take an extra turn after this one.
Destroy all creatures. Lands you control don't untap during your next untap step.
Flying Carnifex Demon enters with two -1/-1 counters on it. {B}, Remove a -1/-1 counter from Carnifex Demon: Put a -1/-1 counter on each other creature. 6/6
Flying, trample Pay 2 life: Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) 6/6
Wither (This deals damage to creatures in the form of -1/-1 counters.) At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature. 5/5
Whenever a creature an opponent controls dies, you may pay {1}{B}. If you do, return that card to the battlefield under your control. If it’s a creature, it’s a Zombie in addition to its other creature types. {1}{B}: Regenerate target Zombie. 4/4
Flying When Reiver Demon enters, if you cast it from your hand, destroy all nonartifact, nonblack creatures. They can’t be regenerated. 6/6
Whenever a Goblin you control is put into a graveyard from the battlefield, you may put a +1/+1 counter on Knucklebone Witch. 1/1
Target player loses 2 life and you gain 2 life. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
Each opponent sacrifices a creature or planeswalker with the highest mana value among creatures and planeswalkers they control.