Art: Zack Stella

Shadows over Innistrad · SOI #53 · Rare
Confirm Suspicions
Instant
Market price · TCGplayer
$0.16
▲ 0.00% · 7 days
$0.16
▲ 0.00% · 30 days
$0.16
▲ 14.29% · 90 days
$0.63
▼ 10.00% · 7 days
$0.63
▼ 21.25% · 30 days
$0.63
▼ 11.27% · 90 days
Other printings
2
Official rulings
4
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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.
April 8, 2016
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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.
April 8, 2016
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You can't cast a spell without choosing legal targets. If all of those targets become illegal, the spell doesn't resolve and you won't investigate.
April 8, 2016
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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.
April 8, 2016