Ulvenwald Mysteries 
Enchantment
$0.11 #7676 0.00 10.4 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%
$1.31↑#64530.082.6 years↓
"Whenever a nontoken creature you control dies, investigate."
Thorough Investigation88%
$2.45↑#70640.16↑5.1 years↓
"Whenever you sacrifice a Clue, venture into the dungeon."
+1 more matching line
Eloise, Nephalia Sleuth86%
$0.35↑#11484↓0.26↑4.9 years↓
"Whenever another creature you control dies, investigate."
+1 more matching line
Graf Mole86%
$0.03↓#15046↓0.12↑10.4 years
"Whenever you sacrifice a Clue, you gain 3 life."
Tireless Tracker86%
$0.24↑#654↑0.27↑10.4 years
"Whenever you sacrifice a Clue, put a +1/+1 counter on this creature."
Daring Sleuth // Bearer of Overwhelming Truths86%
$0.06↓#19053↓0.40↑10.4 years
"When you sacrifice a Clue, transform this creature."
+1 more matching line
Lonis, Genetics Expert84%
$5.49↑#11041↓0.50↑2.5 years↓
"Whenever you sacrifice a Clue, put a +1/+1 counter on another target creature you control."
+1 more matching line
Piper Wright, Publick Reporter84%
$0.33↑#62740.41↑2.5 years↓
"Whenever you sacrifice a Clue, put a +1/+1 counter on target creature you control."
Homicide Investigator84%
$0.15↑#14832↓0.072.6 years↓
"Whenever one or more nontoken creatures you control die, investigate. This ability triggers only once each turn."
Briarbridge Patrol84%
$0.18↑#17297↓0.20↑10.4 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
Teysa, Opulent Oligarch81%
$0.33↑#65150.42↑2.6 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%
$0.23↑#10919↓0.43↑2.5 years↓
"Whenever this card or another artifact creature you control dies, you may investigate."
Unshakable Tail80%
$0.31↑#76910.25↑2.6 years↓
"Whenever one or more creature cards are put into your graveyard from your library, investigate."
+1 more matching line
Havengul Laboratory // Havengul Mystery80%
$0.82↑#90010.094.9 years↓
"At the beginning of your end step, if you sacrificed three or more Clues this turn, transform Havengul Laboratory."
Tolls of War78%
$0.17↑#15547↓0.000.8 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↑#13843↓0.002.6 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%
$0.25↑#13112↓0.12↑2.6 years↓
"Whenever one or more creature cards leave your graveyard, create a 2/2 white and blue Detective creature token, then investigate."
Grim Haruspex76%
$2.28↑#1134↑0.21↑11.9 years↑
"Whenever another nontoken creature you control dies, draw a card."
Lonis, Cryptozoologist76%
$0.27↑#5143↑0.25↑5.3 years↓
"Whenever another nontoken creature you control enters, investigate."
Tamiyo's Journal76%
$0.62↑#2546↑0.24↑10.4 years
"At the beginning of your upkeep, investigate."