"The culprit doesn't seem to care about covering their tracks. Let's hope that's a good thing."
—Morska

„Der Täter macht sich nicht die geringste Mühe, seine Spuren zu verwischen. Hoffen wir, dass das nichts Schlechtes ist."
—Morska

Spur aus Leichen

Gräbersturm (Wenn du diesen Zauberspruch wirkst, kopiere ihn einmal für jedes Permanent, das in diesem Zug aus dem Spiel auf einen Friedhof gelegt wurde.)
Stelle Nachforschungen an. (Erzeuge einen Hinweis-Spielstein. Er ist ein Artefakt mit „{2}, opfere dieses Artefakt: Ziehe eine Karte.")

« Le coupable ne semble pas se soucier d'effacer ses traces. Espérons que ce soit une bonne chose pour nous. »
—Morska

Suivre les cadavres

Déluge de cimetière (Quand vous lancez ce sort, copiez-le pour chaque permanent mis dans un cimetière depuis le champ de bataille ce tour-ci.)
Enquêtez. (Créez un jeton Indice. C'est un artefact avec « {2}, sacrifiez cet artefact : Piochez une carte. »)

"Sembra che al colpevole non interessi nascondere le proprie tracce. Speriamo sia un buon segno."
—Morska

Seguire i Corpi

Tempesta sepolcrale (Quando lanci questa magia, copiala per ogni permanente messo in un cimitero dal campo di battaglia in questo turno.)
Indaga. (Crea una pedina Indizio. È un artefatto con "{2}, Sacrifica questo artefatto: Pesca una carta".)

「犯人は痕跡を消そうともしなかった。それが吉と出るといいのだが。」
――モルスカ

遺体の追跡

墓地ストーム（あなたがこの呪文を唱えたとき、このターンに戦場から墓地に置かれたパーマネント１つにつきこれを１回コピーする。）
調査を行う。（手掛かり・トークン１つを生成する。それは、「{2}, このアーティファクトを生け贄に捧げる：カード１枚を引く。」を持つアーティファクトである。）

Follow the Bodies

Gravestorm (When you cast this spell, copy it for each permanent put into a graveyard from the battlefield this turn.)
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Murders at Karlov Manor Commander

Gravestorm (When you cast this spell, copy it for each permanent put into a graveyard from the battlefield this turn.)
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with gravestorm won't affect the copies.

Clue is an artifact type. Even though it appears on some cards with other permanent types, it's never a creature type, a land type, or anything but an artifact type.

Gravestorm counts all permanents put into graveyards from the battlefield this turn. It doesn't matter who controlled those permanents, who owns them, or whether or not they were tokens.

If an effect refers to a Clue, it means any Clue artifact, not just a Clue artifact token. For example, you can sacrifice Wrench to pay for Alquist Proft, Master Sleuth's activated ability.

Some abilities trigger "whenever you sacrifice a Clue". Those abilities trigger whenever you sacrifice a Clue for any reason, not just to activate a Clue's activated ability.

Some spells and abilities that investigate may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. You won't create any Clue tokens.

The copies of Follow the Bodies created by its gravestorm ability are created on the stack, so they're not cast and won't cause abilities that trigger when a player casts a spell to trigger.

The triggered ability that creates the copies can itself be countered by anything that can counter a triggered ability. If it is countered, no copies will be put onto the stack.

You can't sacrifice a Clue to pay multiple costs. For example, you can't sacrifice a Clue token to activate its own ability and also to activate Alquist Proft, Master Sleuth's ability.