Murders at Karlov Manor

Novice Inspector | Creature | Human Detective | When Novice Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Fajareka Setiawan

Snarling Gorehound | Creature | Dog | Menace Whenever another creature with power 2 or less enters the battlefield under your control, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | John Tedrick

Goblin Maskmaker | Creature | Goblin Citizen | Whenever Goblin Maskmaker attacks, face-down spells you cast this turn cost {1} less to cast. | Tomas Duchek

Rubblebelt Maverick | Creature | Human Detective | When Rubblebelt Maverick enters the battlefield, 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.) {G}, Exile Rubblebelt Maverick from your graveyard: Put a +1/+1 counter on target creature. Activate only as a sorcery. | Carissa Susilo