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

Flying Disguise {4}{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 Hotshot Investigators enters the battlefield, return up to one other target creature to its owner's hand. If you controlled it, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

When Inside Source enters the battlefield, create a 2/2 white and blue Detective creature token. {3}, {T}: Target Detective you control gets +2/+0 and gains vigilance until end of turn. Activate only as a sorcery.

Defender Whenever you draw your second card each turn, Jaded Analyst loses defender and gains vigilance until end of turn.

Flying Disguise {1}{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 Mistway Spy is turned face up, until end of turn, whenever a creature you control deals combat damage to a player, investigate.

When Museum Nightwatch dies, create a 2/2 white and blue Detective creature token. 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 Novice Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Other Detectives you control get +1/+1. Whenever you draw your second card each turn, target Detective can't be blocked this turn.

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.)

{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."

Enchant creature When Dramatic Accusation enters the battlefield, tap enchanted creature. Enchanted creature doesn't untap during its controller's untap step. {U}{U}: Shuffle enchanted creature into its owner's library.

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.")

As an additional cost to cast this spell, you may collect evidence 6. (Exile cards with total mana value 6 or greater from your graveyard.) Until end of turn, target artifact or creature becomes an artifact creature with base power and toughness 4/3. If evidence was collected, it has base power and toughness 1/1 until end of turn instead.

Investigate. Creatures your opponents control get -2/-0 until end of turn. If any of them are suspected, they're no longer suspected. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

({T}: Add {U}.)