I tried to find something that fit in better with the theme, but this was the best I could find. I’ll try to write it so that if someone finds a more thematic implimentation, changing it will be easy.

Add a new rule called Yggdrasil. It shall cointain the following text

Einherjar can attempt challenges at the Yggdrasil by entering a mystical portal.
There is a type of post called a Challange Post. A Challenge Post is an optional event that a Valkyrie may send one Einherjar to. The Einherjar attempts to pass the challenge using a statistic. A challange post may be made weekly by any Valkyrie by making a story post that has a title starting with “Yggdrasil Challenge:” A Challenge Post consists of a summery, which states what the challenge is, a Challenge Rating, which is a number from 1 to 10, and the prize, which is an amount of acorns. All Challenge Posts are subject to the Allfather’s approval. In any Challenge Post the Allfather may cast an ::against:: vote along with a change to any portion of the Challenge Post. The Allfather then shall those changes into the original post. The Allfather can also cast a Veto vote and the Challenge Post shall have no effect at all.

After a Challenge Post has been made, any Valkyrie other than the one who made the challenge post may once send any one Einherjar they own to the Challenge. This is done by first rolling a DICE8 in the GDNT alongside one Einherjar the Valkyrie owns. Using the resulting number, the Valkyrie shall count from the top of the list of Statistics in the Einherjar rule in the Rule set and select the number they stop on when the reach the rolled number.The selected Statistic shall be the statistic the Einherjar shall use when attempting the challenge. Then the Valkyrie shall make a comment in the Challenge Post declaring which Einherjar they are sending (the one mentioned in the GNDT roll) and which statistic they are using. Included in this post shall be a story of how the Einherjar attempts to the that statistic in the challenge. This is called the Challenge Attempt.

At any point, if there is an unprocessed Challenge Atempt comment in a Challenge Post, the Allfather may process a challenge attempt by examining the differen between an attempting Einherjar’s chosen statistic, the story about the attempt, and roll of a DICE10 to decide if the Einherjar passed the challenge. If the Einherjar passes, the Valkyrie who own the attempting Einherjar gains the benifit of the prize. If the attempt fails, the attempting Einherjar may not again attempt a Challenge Post until the next week.

Example:
Challenge Post: Bar Fight

Allfather sees that Moxie is 0 and Challenge Rating is 6, rolles a 2, sees that the How isn’t too inventive, and will the poor roll, decides that poor Charles gets knocked out and fails the challenge.