Krazy Kow

At the beginning of your upkeep, roll a six-sided die. If you a roll a 1, sacrifice Krazy Kow and it deals 3 damage to each creature and each player.

Infernal Spawn of Evil

Flying, first strike
, Reveal Infernal Spawn of Evil from your hand, Say “It’s coming!”: Infernal Spawn of Evil deals 1 damage to target opponent or planeswalker. Activate only during your upkeep and only once each turn.

Sylvan Basilisk

Whenever Sylvan Basilisk becomes blocked by a creature, destroy that creature.

Entropic Specter

Flying
As Entropic Specter enters the battlefield, choose an opponent.
Entropic Specter’s power and toughness are each equal to the number of cards in the chosen player’s hand.
Whenever Entropic Specter deals damage to a player, that player discards a card.

Cursed Flesh

Enchant creature
Enchanted creature gets -1/-1 and has fear. (It can’t be blocked except by artifact creatures and/or black creatures.)

Mind Maggots

When Mind Maggots enters the battlefield, discard any number of creature cards. For each card discarded this way, put two +1/+1 counters on Mind Maggots.

Jackalope Herd

When you cast a spell, return Jackalope Herd to its owner’s hand.

Crashing Boars

Whenever Crashing Boars attacks, defending player chooses an untapped creature they control. That creature blocks Crashing Boars this turn if able.

Plaguebearer

: Destroy target nonblack creature with converted mana cost X.

Spined Sliver

Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.

Fanning the Flames

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Fanning the Flames deals X damage to any target.

Mob Justice

Mob Justice deals damage to target player or planeswalker equal to the number of creatures you control.

Ransack

Look at the top five cards of target player’s library. Put any number of them on the bottom of that library in any order and the rest on top of the library in any order.

Hornet Cannon

, : Create a 1/1 colorless Insect artifact creature token with flying and haste named Hornet. Destroy it at the beginning of the next end step.

Serpent Warrior

When Serpent Warrior enters the battlefield, you lose 3 life.

Change of Heart

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Target creature can’t attack this turn.

Volrath’s Shapeshifter

As long as the top card of your graveyard is a creature card, Volrath’s Shapeshifter has the full text of that card and has the text “: Discard a card.” (Volrath’s Shapeshifter has that card’s name, mana cost, color, types, abilities, power, and toughness.)
: Discard a card.

Sliver Queen

: Create a 1/1 colorless Sliver creature token.

Vhati il-Dal

: Until end of turn, target creature has base power 1 or base toughness 1.

Knight of Dawn

First strike
: Knight of Dawn gains protection from the color of your choice until end of turn.