Scrutiny of the Guildpact is a uncommon Enchantment card from Alchemy: Murders at Karlov Manor (YMKM), collector number 1.
When Scrutiny of the Guildpact enters, you may choose a creature card in your hand. If you do, that card perpetually incorporates {W} and gains "When you cast this spell, create a 2/2 white and blue Detective creature token." Multicolored creatures you control get +1/+1.