Whenever a nontoken creature you control dies, investigate. (Create a colorless Clue artifact token with " , Sacrifice this artifact: Draw a card.")
Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.
The last ability is a triggered ability, not an activated ability. It doesnâ€™t allow you to sacrifice a Clue whenever you want; rather, you need some other way of sacrificing it, such as the activated ability that Clue tokens have.
If you sacrifice a Clue as part of casting a spell or activating an ability, the last ability will resolve before that spell or ability.
If a nontoken creature dies at the same time as Ulvenwald Mysteries, the first ability triggers.
The tokens are normal artifacts. For example, they can be sacrificed to cast Angelic Purge or targeted by Root Out.
The token is named Clue and has the artifact subtype Clue. Clue isnâ€™t a creature type.
If you sacrifice a Clue for another cardâ€™s cost or effect, such as that of Angelic Purge or Tamiyoâ€™s Journal, you canâ€™t also pay and sacrifice it to draw a card.
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