Murders at Karlov Manor

Assemble the Players | Enchantment | | You may look at the top card of your library any time. Once each turn, you may cast a creature spell with power 2 or less from the top of your library. | Evyn Fong

Auspicious Arrival | Instant | | Target creature gets +2/+2 until end of turn. Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Lie Setiawan

Call a Surprise Witness | Sorcery | | Return target creature card with mana value 3 or less from your graveyard to the battlefield. Put a flying counter on it. It's a Spirit in addition to its other types. | Julia Metzger

Case of the Gateway Express | Enchantment | Case | When this Case enters the battlefield, choose target creature you don't control. Each creature you control deals 1 damage to that creature. To solve — Three or more creatures attacked this turn. (If unsolved, solve at the beginning of your end step.) Solved — Creatures you control get +1/+0. | Edgar Sánchez Hidalgo

Case of the Pilfered Proof | Enchantment | Case | Whenever a Detective enters the battlefield under your control and whenever a Detective you control is turned face up, put a +1/+1 counter on it. To solve — You control three or more Detectives. (If unsolved, solve at the beginning of your end step.) Solved — If one or more tokens would be created under your control, those tokens plus a Clue token are created instead. (It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Joshua Cairos

Doorkeeper Thrull | Creature | Thrull | Flash Flying Artifacts and creatures entering the battlefield don't cause abilities to trigger. | Camille Alquier

Marketwatch Phantom | Creature | Spirit Detective | Whenever another creature with power 2 or less enters the battlefield under your control, Marketwatch Phantom gains flying until end of turn. | Bram Sels

Neighborhood Guardian | Creature | Unicorn | Whenever another creature with power 2 or less enters the battlefield under your control, target creature you control gets +1/+1 until end of turn. | Daren Bader

Not on My Watch | Instant | | Exile target attacking creature. | Jason A. Engle

Perimeter Enforcer | Creature | Human Detective | Flying, lifelink Whenever another Detective enters the battlefield under your control and whenever a Detective you control is turned face up, Perimeter Enforcer gets +1/+1 until end of turn. | Josh Hass

Sanctuary Wall | Artifact Creature | Wall | Defender {2}{W}, {T}: Tap target creature. You may put a stun counter on it. If you do, put a stun counter on Sanctuary Wall. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Josu Solano

Seasoned Consultant | Creature | Human Detective | Whenever you attack with three or more creatures, Seasoned Consultant gets +2/+0 until end of turn. | Andreas Zafiratos

Tenth District Hero | Creature | Human | {1}{W}, Collect evidence 2: Tenth District Hero becomes a Human Detective with base power and toughness 4/4 and gains vigilance. {2}{W}, Collect evidence 4: If Tenth District Hero is a Detective, it becomes a legendary creature named Mileva, the Stalwart, it has base power and toughness 5/5, and it gains "Other creatures you control have indestructible." | Kai Carpenter

Unyielding Gatekeeper | Creature | Elephant Cleric | Disguise {1}{W} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When Unyielding Gatekeeper is turned face up, exile another target nonland permanent. If you controlled it, return it to the battlefield tapped. Otherwise, its controller creates a 2/2 white and blue Detective creature token. | Borja Pindado

No More Lies | Instant | | Counter target spell unless its controller pays {3}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. | Liiga Smilshkalne

Officious Interrogation | Instant | | This spell costs {W}{U} more to cast for each target beyond the first. Choose any number of target players. Investigate X times, where X is the total number of creatures those players control. | Borja Pindado

Soul Search | Sorcery | | Target opponent reveals their hand. You choose a nonland card from it. Exile that card. If the card's mana value is 1 or less, create a 1/1 white and black Spirit creature token with flying. | A. M. Sartor

Dog Walker | Creature | Human Citizen | Vigilance Disguise {R/W}{R/W} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When Dog Walker is turned face up, create two tapped 1/1 white Dog creature tokens. | Milivoj Ćeran

Lightning Helix | Instant | | Lightning Helix deals 3 damage to any target and you gain 3 life. | Eli Minaya

Sumala Sentry | Creature | Elf Archer | Reach Whenever a face-down permanent you control is turned face up, put a +1/+1 counter on it and a +1/+1 counter on Sumala Sentry. | Nicholas Elias