Wild Hunger

Target creature gets +3/+1 and gains trample until end of turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Warped Physique

Target creature gets +X/-X until end of turn, where X is the number of cards in your hand.

Slum Reaper

When Slum Reaper enters the battlefield, each player sacrifices a creature.

Consuming Aberration

Consuming Aberration’s power and toughness are each equal to the number of cards in your opponents’ graveyards.
Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Acidic Slime

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.

Rabid Bite

Target creature you control deals damage equal to its power to target creature you don’t control.

Horizon Scholar

Flying
When Horizon Scholar enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Tezzeret’s Gambit

( can be paid with either or 2 life.)
Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Bred for the Hunt

Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, you may draw a card.

Mind’s Eye

Whenever an opponent draws a card, you may pay . If you do, draw a card.

Slum Reaper

When Slum Reaper enters the battlefield, each player sacrifices a creature.

Acidic Slime

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.

Cathars’ Crusade

Whenever a creature enters the battlefield under your control, put a +1/+1 counter on each creature you control.

Goblin Warchief

Goblin spells you cast cost less to cast.
Goblins you control have haste.

Skeletonize

Skeletonize deals 3 damage to target creature. When a creature dealt damage this way dies this turn, create a 1/1 black Skeleton creature token with “: Regenerate this creature.”

Conflux

Search your library for a white card, a blue card, a black card, a red card, and a green card. Reveal those cards and put them into your hand. Then shuffle your library.

Guard Duty

Enchant creature
Enchanted creature has defender.

Pillar of Flame

Pillar of Flame deals 2 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Aether Vial

At the beginning of your upkeep, you may put a charge counter on Aether Vial.
: You may put a creature card with converted mana cost equal to the number of charge counters on Aether Vial from your hand onto the battlefield.

Malfegor

Flying
When Malfegor enters the battlefield, discard your hand. Each opponent sacrifices a creature for each card discarded this way.

Vorinclex, Voice of Hunger

Trample
Whenever you tap a land for mana, add one mana of any type that land produced.
Whenever an opponent taps a land for mana, that land doesn’t untap during its controller’s next untap step.

Rakdos Drake

Flying
Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can’t block as long as it has a +1/+1 counter on it.)

Krenko, Mob Boss

: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.