| # of Slots
| Relevant
| Check
|
| Required
| Ability
| Modifier
|
Grade or Slope in Passage
| 1
| Wisdom
| +4
|
New Tunnel/Passage Construction
| 1
| Wisdom
| +4
|
Sliding/Shifting Walls or Rooms
| 1
| Wisdom
| +2
|
Stonework Traps, Pits, and Deadfalls
| 1
| Wisdom
| 0
|
Approximate Depth Underground
| 1
| Wisdom
| 0
|