Expose the Culprit

(T: Add W.)

When this Case enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle. To solve — There are five colors among permanents you control. (If unsolved, solve at the beginning of your end step.) Solved — At the beginning of combat on your turn, target creature you control gains flying, double strike, and vigilance until end of turn.

Flying When this creature enters, all suspected creatures are no longer suspected. When this creature dies, you gain 3 life and suspect up to one target creature an opponent controls. (A suspected creature has menace and can't block.)

You may look at the top card of your library any time. Once each turn, you may cast a creature spell with power 2 or less from the top of your library.

Flying, lifelink, ward 2 Disguise X3W When this creature is turned face up, exile up to X other target creatures from the battlefield and/or creature cards from graveyards. When this creature leaves the battlefield, return the exiled cards to their owners' hands.

Target creature gets +2/+2 until end of turn. Investigate. (Create a Clue token. It's an artifact with "2, Sacrifice this token: Draw a card.")

Return target creature card with mana value 3 or less from your graveyard to the battlefield. Put a flying counter on it. It's a Spirit in addition to its other types.

Flying 2BB, Exile this card from your graveyard: Create two tapped 1/1 black Bat creature tokens with flying.