"To halt these lurid practices, Geralf must be found and made an example of."
—Inquisitor Delmund

Search the Premises

Whenever a creature attacks you or a planeswalker you control, investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")

Whenever a creature attacks you or a planeswalker you control, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Foundations Commander

Murders at Karlov Manor Commander

Whenever a creature attacks you or a planeswalker you control, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Modern Horizons 2

Mood: Determined to find evidence of wrongdoing.

Whenever Haliya enters or attacks, put a +1/+1 counter on target creature you control.
Whenever one or more creatures you control with +1/+1 counters on them deal combat damage to a player, draw a card.