Ulvenwald Mysteries
Enchantment{2}{G}
Whenever a nontoken creature you control dies, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.
Colour identity Green · Investigate
In short
Ulvenwald Mysteries has 7 listed printings; the most valuable is the printing from J25 at US$0.33 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Every Ulvenwald Mysteries printing

Ulvenwald Mysteries
J25 · 735
Price not tracked
The List

Ulvenwald Mysteries
PLST · SOI-236
Price not tracked

Ulvenwald Mysteries
MKC · 193
Price not tracked
Retro Frame

Ulvenwald Mysteries
INR · 423
Price not tracked

Ulvenwald Mysteries
2XM · 184
Price not tracked

Ulvenwald Mysteries
INR · 222
Price not tracked

Ulvenwald Mysteries
SOI · 236
Price not tracked