Bloomburrow

Bonecache Overseer | Creature | Squirrel Warlock | {T}, Pay 1 life: Draw a card. Activate only if three or more cards left your graveyard this turn or if you've sacrificed a Food this turn. | Mila Pesic

Downwind Ambusher | Creature | Skunk Assassin | Flash When Downwind Ambusher enters, choose one — • Target creature an opponent controls gets -1/-1 until end of turn. • Destroy target creature an opponent controls that was dealt damage this turn. | Aaron Miller

Huskburster Swarm | Creature | Elemental Insect | This spell costs {1} less to cast for each creature card you own in exile and in your graveyard. Menace, deathtouch | John Tedrick

Moonstone Harbinger | Creature | Bat Warrior | Flying, deathtouch Whenever you gain or lose life during your turn, Bats you control get +1/+0 and gain deathtouch until end of turn. This ability triggers only once each turn. | Kevin Sidharta

Persistent Marshstalker | Creature | Rat Berserker | Persistent Marshstalker gets +1/+0 for each other Rat you control. Threshold — Whenever you attack with one or more Rats, if seven or more cards are in your graveyard, you may pay {2}{B}. If you do, return Persistent Marshstalker from your graveyard to the battlefield tapped and attacking. | Greg Staples

Starscape Cleric | Creature | Bat Cleric | Offspring {2}{B} (You may pay an additional {2}{B} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Flying This creature can't block. Whenever you gain life, each opponent loses 1 life. | Omar Rayyan

Thought-Stalker Warlock | Creature | Lizard Warlock | Menace (This creature can't be blocked except by two or more creatures.) When Thought-Stalker Warlock enters, choose target opponent. If they lost life this turn, they reveal their hand, you choose a nonland card from it, and they discard that card. Otherwise, they discard a card. | Daniel Ljunggren

Wick's Patrol | Creature | Rat Warlock | When Wick's Patrol enters, mill three cards. When you do, target creature an opponent controls gets -X/-X until end of turn, where X is the greatest mana value among cards in your graveyard. | Dmitry Burmak

Flamecache Gecko | Creature | Lizard Warlock | When Flamecache Gecko enters, if an opponent lost life this turn, add {B}{R}. {1}{R}, Discard a card: Draw a card. | Brian Valeza

Starseer Mentor | Creature | Bat Warlock | Flying, vigilance At the beginning of your end step, if you gained or lost life this turn, target opponent loses 3 life unless they sacrifice a nonland permanent or discard a card. | Taras Susak

Tidecaller Mentor | Creature | Rat Wizard | Menace Threshold — When Tidecaller Mentor enters, if seven or more cards are in your graveyard, return up to one target nonland permanent to its owner's hand. | Irina Nordsol

Fireglass Mentor | Creature | Lizard Warlock | At the beginning of your second main phase, if an opponent lost life this turn, exile the top two cards of your library. Choose one of them. Until end of turn, you may play that card. | Henry Peters

Vinereap Mentor | Creature | Squirrel Druid | When Vinereap Mentor enters or dies, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") | Valera Lutfullina