Guilds of Ravnica

Mephitic Vapors | Sorcery | | All creatures get -1/-1 until end of turn. Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) | Darek Zabrocki

Never Happened | Sorcery | | Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it. | Aaron Miller

Spinal Centipede | Creature | Insect | When Spinal Centipede dies, put a +1/+1 counter on target creature you control. | Zezhou Chen

Veiled Shade | Creature | Shade | {1}{B}: Veiled Shade gets +1/+1 until end of turn. | Anna Steinbauer

Darkblade Agent | Creature | Human Assassin | As long as you've surveilled this turn, Darkblade Agent has deathtouch and "Whenever this creature deals combat damage to a player, you draw a card." | Joe Slucher

Notion Rain | Sorcery | | Surveil 2, then draw two cards. Notion Rain deals 2 damage to you. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) | Lius Lasahido

Whisper Agent | Creature | Human Rogue | Flash When Whisper Agent enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | Deruchenko Alexander

Erstwhile Trooper | Creature | Zombie Soldier | Discard a creature card: Erstwhile Trooper gets +2/+2 and gains trample until end of turn. Activate only once each turn. | Jason A. Engle

Pitiless Gorgon | Creature | Gorgon | Deathtouch | Alex Konstad

Dimir Locket | Artifact | | {T}: Add {U} or {B}. {U/B}{U/B}{U/B}{U/B}, {T}, Sacrifice Dimir Locket: Draw two cards. | Zezhou Chen

Golgari Locket | Artifact | | {T}: Add {B} or {G}. {B/G}{B/G}{B/G}{B/G}, {T}, Sacrifice Golgari Locket: Draw two cards. | Milivoj Ćeran