
Fall of the Gavel | Instant | | Counter target spell. You gain 5 life. | Matt Stewart

Righteous Authority | Enchantment | Aura | Enchant creature
Enchanted creature gets +1/+1 for each card in its controller's hand.
At the beginning of the draw step of enchanted creature's controller, that player draws an additional card. | Scott Chou

Azor's Elocutors | Creature | Human Advisor | At the beginning of your upkeep, put a filibuster counter on Azor's Elocutors. Then if Azor's Elocutors has five or more filibuster counters on it, you win the game.
Whenever a source deals damage to you, remove a filibuster counter from Azor's Elocutors. | Johannes Voss

Hypersonic Dragon | Creature | Dragon | Flying, haste
You may cast sorcery spells as though they had flash. (You may cast them any time you could cast an instant.) | Dan Scott

Mercurial Chemister | Creature | Human Wizard | {U}, {T}: Draw two cards.
{R}, {T}, Discard a card: Mercurial Chemister deals damage to target creature equal to the discarded card's mana value. | Wesley Burt

Thoughtflare | Instant | | Draw four cards, then discard two cards. | David Rapoza

Rakdos Ragemutt | Creature | Elemental Dog | Lifelink, haste | Ryan Barger

Skull Rend | Sorcery | | Skull Rend deals 2 damage to each opponent. Those players each discard two cards at random. | Greg Staples

Spawn of Rix Maadi | Creature | Horror | 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.) | Min Yum

Vraska the Unseen | Legendary Planeswalker | Vraska | +1: Until your next turn, whenever a creature deals combat damage to Vraska the Unseen, destroy that creature.
−3: Destroy target nonland permanent.
−7: Create three 1/1 black Assassin creature tokens with "Whenever this creature deals combat damage to a player, that player loses the game." | Aleksi Briclot

Golgari Longlegs | Creature | Insect | | Volkan Baǵa