Oracle

Enchantment 

Whenever a nontoken creature you control dies, investigate. (Create a colorless Clue artifact token with "2, Sacrifice this artifact: Draw a card.")
Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

8/7/2020
If a nontoken creature dies at the same time as Ulvenwald Mysteries, the first ability triggers.

8/7/2020
The last ability is a triggered ability, not an activated ability. It doesn’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.

8/7/2020
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.

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