Murders at Karlov Manor

Cold Case Cracker | Creature | Spirit Detective | Flying When Cold Case Cracker dies, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Wayne Wu

Surveillance Monitor | Creature | Vedalken Detective | When Surveillance Monitor enters the battlefield, you may collect evidence 4. (Exile cards with total mana value 4 or greater from your graveyard.) Whenever you collect evidence, create a 1/1 colorless Thopter artifact creature token with flying. | Scott Murphy

Granite Witness | Artifact Creature | Gargoyle Detective | Flying, vigilance Disguise {W/U}{W/U} (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 Granite Witness is turned face up, you may tap or untap target creature. | Tuan Duong Chu

Curious Cadaver | Creature | Zombie Detective | Flying When you sacrifice a Clue, return Curious Cadaver from your graveyard to your hand. | Peter Polach

Gadget Technician | Creature | Goblin Artificer | When Gadget Technician enters the battlefield or is turned face up, create a 1/1 colorless Thopter artifact creature token with flying. Disguise {U/R}{U/R} (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.) | Caio Monteiro

Kellan, Inquisitive Prodigy | Legendary Creature | Human Faerie Detective | Flying, vigilance Whenever Kellan, Inquisitive Prodigy attacks, destroy up to one target artifact. If you controlled that permanent, draw a card. | Joshua Raphael

Vannifar, Evolved Enigma | Legendary Creature | Elf Ooze Wizard | At the beginning of combat on your turn, choose one — • Cloak a card from your hand. (Put it onto the battlefield face down as a 2/2 creature with ward {2}. Turn it face up any time for its mana cost if it's a creature card.) • Put a +1/+1 counter on each colorless creature you control. | Uriah Voth