Player characters may attempt to investigate the pillars and portal. The difficulty to do this will be 14 if they are not in combat, but 16 if combat has begun. Each pillar has a rune attached to it:

Stillness, Binding, Return, Threshold, and Passage.

Stillness has been detached from the metal plate that affixes it to the mechanism to which the other four are attached. Along the various walls of the surroundings are hieroglyphs that describe how to use the dials.

The correct order of the runes is Stillness to the north, Passage to the East, Binding to the South, and Return to the west.

The last rune, Threshold, sits on a special mechanism with six images. Two of those images align with north and south, the other four are in the NE, NW, SE, and SW quadrants. The images are: A heart, a four-leaf clover, an egg, a firecracker, a jack-o'-lantern, and a turkey. Threshold currently rests between the Four-Leaf Clover and the Egg.

To solve this puzzle, the players will need to move the pillars and reattach Stillness.

When they begin to try and solve the puzzle, start a progress clock (8) and tick it down by two anytime they place the correct rune. When the players attempt to read the heiroplyphic instructions or to reattach the Stillness pillar to its mechanism, they require action rolls. Success should tick down the success clock by one. If they are reading hieroglyphs, give them one of the clues below. Let the player roll a d6 (reroll if they get a result already rolled) to determine which clue is given.

Clues:
1 - To complete this test, you must start where the needle finds its rest.
2 - You must map the journey's flow, beginning with the Stillness of falling snow. (Stillness)
3 - With winter's blessing received, Passage may be achieved. (Passage)
4 - Unfettered, the path is winding; to return from whence you came requires Binding (Binding).
5 - When every road has met its turn, the final step is to Return. (Return)
6 - The journey’s runes must hold their place; the Threshold marks the chosen space. (Threshold).

If at any point the players move pillars to an incorrect formation, this is a good trigger for Unstable energies.

Once the pillars are all appropriately placed, the undead in the cave fall to the floor inanimate once more.

Spend one fear to have either 2d4 + (1/2 party size) Skeleton Dredges OR 1d4 + (1/2 party size) Shambling Zombies claw their way up from their graves at far range. Spotlight them immediately.

If the Undead Frost Yeti has not yet been encountered, roll 1d4 and start a countdown on that number. The Yeti begins to free itself from its resting place and will fully emerge when it reaches zero. Anytime the players move one of the pillars of the transportation circle, you may spend a fear to reduce the countdown by one. You may only spend one fear at a time as part of this GM move.

When a player fails an action roll, they can cause themselves and everyone within a very close distance to roll an agility reaction roll (14) or become temporarily restrained as their surroundings destabilize. In an ice environment, this might mean they fall into the snow and ice, whereas in a desert environment, they are swallowed by quicksand. Failure on the agility check causes 1d8 physical damage. Success avoids negative outcomes.