Ulvenwald Mysteries 
Enchantment
$0.07 #7896 0.12 10.5 years
Whenever a nontoken creature you control dies, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")
, Sacrifice this token: Draw a card.")Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.
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Merchant of Truth88%
$0.41↑#63460.122.7 years↓
"Whenever a nontoken creature you control dies, investigate."
Thorough Investigation88%
$2.27↑#72190.47↑5.2 years↓
"Whenever you sacrifice a Clue, venture into the dungeon."
+1 more matching line
Tireless Tracker86%
$0.24↑#668↑0.25↑10.5 years
"Whenever you sacrifice a Clue, put a +1/+1 counter on this creature."
Graf Mole86%
$0.04↓#15432↓0.1610.5 years
"Whenever you sacrifice a Clue, you gain 3 life."
Daring Sleuth // Bearer of Overwhelming Truths86%
$0.06↓#19429↓0.0610.5 years
"When you sacrifice a Clue, transform this creature."
+1 more matching line
Eloise, Nephalia Sleuth85%
$0.36↑#11799↓0.185.1 years↓
"Whenever another creature you control dies, investigate."
+1 more matching line
Lonis, Genetics Expert84%
$5.39↑#11221↓0.072.7 years↓
"Whenever you sacrifice a Clue, put a +1/+1 counter on another target creature you control."
+1 more matching line
Homicide Investigator84%
$0.16↑#15174↓0.112.7 years↓
"Whenever one or more nontoken creatures you control die, investigate. This ability triggers only once each turn."
Piper Wright, Publick Reporter84%
$0.35↑#64230.112.6 years↓
"Whenever you sacrifice a Clue, put a +1/+1 counter on target creature you control."
Briarbridge Patrol84%
$0.17↑#17669↓0.00↓10.5 years
"At the beginning of each end step, if you sacrificed three or more Clues this turn, you may put a creature card from your hand onto the battlefield."
+1 more matching line
Havengul Laboratory // Havengul Mystery82%
$0.59↑#92240.23↑5.0 years↓
"At the beginning of your end step, if you sacrificed three or more Clues this turn, transform this card."
Teysa, Opulent Oligarch81%
$0.30↑#66420.062.7 years↓
"Whenever a Clue you control is put into a graveyard from the battlefield, create a 1/1 white and black Spirit creature token with flying. This ability triggers only once each turn."
Nick Valentine, Private Eye80%
$0.24↑#11105↓0.22↑2.6 years↓
"Whenever this card or another artifact creature you control dies, you may investigate."
Unshakable Tail80%
$0.34↑#78410.212.7 years↓
"Whenever one or more creature cards are put into your graveyard from your library, investigate."
+1 more matching line
Tolls of War78%
$0.14↑#15446↓0.160.9 years↓
"Whenever you sacrifice a permanent during your turn, create a 1/1 white Ally creature token. This ability triggers only once each turn."
Lazav, Wearer of Faces78%
$0.23↑#14091↓0.26↑2.7 years↓
"Whenever you sacrifice a Clue, you may have this card become a copy of a creature card exiled with it until end of turn."
Chalk Outline77%
$0.26↑#13361↓0.212.7 years↓
"Whenever one or more creature cards leave your graveyard, create a 2/2 white and blue Detective creature token, then investigate."
Tamiyo's Journal76%
$0.65↑#2582↑0.1910.5 years
"At the beginning of your upkeep, investigate."
Persuasive Interrogators76%
$0.19↑#12538↓0.60↑2.7 years↓
"Whenever you sacrifice a Clue, target opponent gets two poison counters."
Grim Haruspex75%
$2.51↑#1153↑0.1712.1 years↑
"Whenever another nontoken creature you control dies, draw a card."