Murders at Karlov Manor

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

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

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

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