Gatecrash

Alms Beast | Creature | Beast | Creatures blocking or blocked by Alms Beast have lifelink. | Dan Scott

High Priest of Penance | Creature | Human Cleric | Whenever High Priest of Penance is dealt damage, you may destroy target nonland permanent. | Mark Zug

Merciless Eviction | Sorcery | | Choose one — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all planeswalkers. | Richard Wright

Treasury Thrull | 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.) Whenever Treasury Thrull attacks, you may return target artifact, creature, or enchantment card from your graveyard to your hand. | Mark Zug

Immortal Servitude | Sorcery | | Return each creature card with mana value X from your graveyard to the battlefield. | Seb McKinnon

Assemble the Legion | Enchantment | | At the beginning of your upkeep, put a muster counter on Assemble the Legion. Then create a 1/1 red and white Soldier creature token with haste for each muster counter on Assemble the Legion. | Eric Deschamps

Firemane Avenger | Creature | Angel | Flying Battalion — Whenever Firemane Avenger and at least two other creatures attack, Firemane Avenger deals 3 damage to any target and you gain 3 life. | Wayne Reynolds

Foundry Champion | Creature | Elemental Soldier | When Foundry Champion enters the battlefield, it deals damage to any target equal to the number of creatures you control. {R}: Foundry Champion gets +1/+0 until end of turn. {W}: Foundry Champion gets +0/+1 until end of turn. | Todd Lockwood

Spark Trooper | Creature | Elemental Soldier | Trample, lifelink, haste At the beginning of the end step, sacrifice Spark Trooper. | James Ryman

Boros Reckoner | Creature | Minotaur Wizard | Whenever Boros Reckoner is dealt damage, it deals that much damage to any target. {R/W}: Boros Reckoner gains first strike until end of turn. | Howard Lyon

Consuming Aberration | Creature | Horror | 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. | Karl Kopinski

Mind Grind | Sorcery | | Each opponent reveals cards from the top of their library until they reveal X land cards, then puts all cards revealed this way into their graveyard. X can't be 0. | Daarken

Soul Ransom | Enchantment | Aura | Enchant creature You control enchanted creature. Discard two cards: Soul Ransom's controller sacrifices it, then draws two cards. Only your opponents may activate this ability. | Steve Argyle

Whispering Madness | Sorcery | | Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.) | Clint Cearley

Nightveil Specter | Creature | Specter | Flying Whenever Nightveil Specter deals combat damage to a player, that player exiles the top card of their library. You may play lands and cast spells from among cards exiled with Nightveil Specter. | Min Yum

Biovisionary | Creature | Human Wizard | At the beginning of the end step, if you control four or more creatures named Biovisionary, you win the game. | Ryan Barger

Fathom Mage | Creature | Human 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.) Whenever a +1/+1 counter is put on Fathom Mage, you may draw a card. | Ryan Pancoast

Mystic Genesis | Instant | | Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value. | Mike Bierek

Unexpected Results | Sorcery | | Shuffle your library, then reveal the top card. If it's a nonland card, you may cast it without paying its mana cost. If it's a land card, you may put it onto the battlefield and return Unexpected Results to its owner's hand. | Mike Bierek

Biomass Mutation | Instant | | Creatures you control have base power and toughness X/X until end of turn. | Dan Scott

Clan Defiance | Sorcery | | Choose one or more — • Clan Defiance deals X damage to target creature with flying. • Clan Defiance deals X damage to target creature without flying. • Clan Defiance deals X damage to target player or planeswalker. | Daarken

Gruul Ragebeast | Creature | Beast | Whenever Gruul Ragebeast or another creature enters the battlefield under your control, that creature fights target creature an opponent controls. | Dave Kendall

Rubblehulk | Creature | Elemental | Rubblehulk's power and toughness are each equal to the number of lands you control. Bloodrush — {1}{R}{G}, Discard Rubblehulk: Target attacking creature gets +X/+X until end of turn, where X is the number of lands you control. | Raymond Swanland

Signal the Clans | Instant | | Search your library for three creature cards and reveal them. If you reveal three cards with different names, choose one of them at random and put that card into your hand. Shuffle the rest into your library. | Dave Kendall

Rubblebelt Raiders | Creature | Human Warrior | Whenever Rubblebelt Raiders attacks, put a +1/+1 counter on it for each attacking creature you control. | Chippy