Gatecrash

Boros Elite | Creature | Human Soldier | Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn. | Willian Murai

Guardian of the Gateless | Creature | Angel | Flying Guardian of the Gateless can block any number of creatures. Whenever Guardian of the Gateless blocks, it gets +1/+1 until end of turn for each creature it's blocking. | Wesley Burt

Knight of Obligation | Creature | Human Knight | Vigilance Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) | Ryan Barger

Urbis Protector | Creature | Human Cleric | When Urbis Protector enters the battlefield, create a 4/4 white Angel creature token with flying. | Steve Argyle

Incursion Specialist | Creature | Human Wizard | Whenever you cast your second spell each turn, Incursion Specialist gets +2/+0 until end of turn and can't be blocked this turn. | Svetlin Velinov

Mindeye Drake | Creature | Drake | Flying When Mindeye Drake dies, target player mills five cards. | Lars Grant-West

Sapphire Drake | Creature | Drake | Flying Each creature you control with a +1/+1 counter on it has flying. | Steve Prescott

Simic Fluxmage | Creature | Merfolk Wizard | Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) {1}{U}, {T}: Move a +1/+1 counter from Simic Fluxmage onto target creature. | Karl Kopinski

Gateway Shade | Creature | Shade | {B}: Gateway Shade gets +1/+1 until end of turn. Tap an untapped Gate you control: Gateway Shade gets +2/+2 until end of turn. | Ryan Yee

Smog Elemental | Creature | Elemental | Flying Creatures with flying your opponents control get -1/-1. | Yeong-Hao Han

Thrull Parasite | Creature | Thrull | Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) {T}, Pay 2 life: Remove a counter from target nonland permanent. | Clint Cearley

Undercity Informer | Creature | Human Rogue | {1}, Sacrifice a creature: Target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard. | Raymond Swanland

Wight of Precinct Six | Creature | Zombie | Wight of Precinct Six gets +1/+1 for each creature card in your opponents' graveyards. | Ryan Barger

Cinder Elemental | Creature | Elemental | {X}{R}, {T}, Sacrifice Cinder Elemental: It deals X damage to any target. | Svetlin Velinov

Firefist Striker | Creature | Human Soldier | Battalion — Whenever Firefist Striker and at least two other creatures attack, target creature can't block this turn. | Tyler Jacobson

Hellraiser Goblin | Creature | Goblin Berserker | Creatures you control have haste and attack each combat if able. | Karl Kopinski

Ripscale Predator | Creature | Dinosaur | Menace (This creature can't be blocked except by two or more creatures.) | Volkan Baǵa

Viashino Shanktail | Creature | Viashino Warrior | First strike Bloodrush — {2}{R}, Discard Viashino Shanktail: Target attacking creature gets +3/+1 and gains first strike until end of turn. | Kev Walker

Crowned Ceratok | Creature | Rhino | Trample Each creature you control with a +1/+1 counter on it has trample. | Steve Prescott

Experiment One | Creature | Human Ooze | Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Remove two +1/+1 counters from Experiment One: Regenerate Experiment One. | Chase Stone

2.5 LSV

Rust Scarab | Creature | Insect | Whenever Rust Scarab becomes blocked, you may destroy target artifact or enchantment defending player controls. | Adam Paquette

Wasteland Viper | Creature | Snake | Deathtouch Bloodrush — {G}, Discard Wasteland Viper: Target attacking creature gets +1/+2 and gains deathtouch until end of turn. | Lucas Graciano

Cartel Aristocrat | Creature | Human Advisor | Sacrifice another creature: Cartel Aristocrat gains protection from the color of your choice until end of turn. | James Ryman

3.5 LSV

Vizkopa Confessor | Creature | Human Cleric | Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) When Vizkopa Confessor enters the battlefield, pay any amount of life. Target opponent reveals that many cards from their hand. You choose one of them and exile it. | Ryan Pancoast

Vizkopa Guildmage | Creature | Human Wizard | {1}{W}{B}: Target creature gains lifelink until end of turn. {1}{W}{B}: Whenever you gain life this turn, each opponent loses that much life. | Tyler Jacobson

Fortress Cyclops | Creature | Cyclops Soldier | Whenever Fortress Cyclops attacks, it gets +3/+0 until end of turn. Whenever Fortress Cyclops blocks, it gets +0/+3 until end of turn. | Maciej Kuciara

Ordruun Veteran | Creature | Minotaur Soldier | Battalion — Whenever Ordruun Veteran and at least two other creatures attack, Ordruun Veteran gains double strike until end of turn. (It deals both first-strike and regular combat damage.) | Greg Staples

Sunhome Guildmage | Creature | Human Wizard | {1}{R}{W}: Creatures you control get +1/+0 until end of turn. {2}{R}{W}: Create a 1/1 red and white Soldier creature token with haste. | Eric Deschamps

Truefire Paladin | Creature | Human Knight | Vigilance {R}{W}: Truefire Paladin gets +2/+0 until end of turn. {R}{W}: Truefire Paladin gains first strike until end of turn. | Michael C. Hayes

Bane Alley Broker | Creature | Human Rogue | {T}: Draw a card, then exile a card from your hand face down. You may look at cards exiled with Bane Alley Broker. {U}{B}, {T}: Return a card exiled with Bane Alley Broker to its owner's hand. | Clint Cearley

Dinrova Horror | Creature | Horror | When Dinrova Horror enters the battlefield, return target permanent to its owner's hand, then that player discards a card. | Johann Bodin

3.5 LSV

Duskmantle Guildmage | Creature | Human Wizard | {1}{U}{B}: Whenever a card is put into an opponent's graveyard from anywhere this turn, that player loses 1 life. {2}{U}{B}: Target player mills two cards. | Slawomir Maniak

Elusive Krasis | Creature | Fish Mutant | Elusive Krasis can't be blocked. Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) | Wesley Burt

Nimbus Swimmer | Creature | Leviathan | Flying Nimbus Swimmer enters the battlefield with X +1/+1 counters on it. | Howard Lyon

Zameck Guildmage | Creature | Elf Wizard | {G}{U}: This turn, each creature you control enters the battlefield with an additional +1/+1 counter on it. {G}{U}, Remove a +1/+1 counter from a creature you control: Draw a card. | Chase Stone

Merfolk of the Depths | Creature | Merfolk Soldier | Flash (You may cast this spell any time you could cast an instant.) | Scott Chou

Ghor-Clan Rampager | Creature | Beast | Trample Bloodrush — {R}{G}, Discard Ghor-Clan Rampager: Target attacking creature gets +4/+4 and gains trample until end of turn. | Charles Urbach

3.5 LSV

Skarrg Guildmage | Creature | Human Shaman | {R}{G}: Creatures you control gain trample until end of turn. {1}{R}{G}: Target land you control becomes a 4/4 Elemental creature until end of turn. It's still a land. | Aleksi Briclot

Burning-Tree Emissary | Creature | Human Shaman | When Burning-Tree Emissary enters the battlefield, add {R}{G}. | Izzy