If a contested skill check is ever desired or necessary, since Nimble monsters don’t have skills or stats, you can roll an additional die based on the creature’s capabilities and add it to the skill check instead:
- No bonus or +1d4. This monster is untrained or average at this skill.
- +1d6–1d10. This monster is trained or very good in the skill.
- +1d12–1d20. This monster is world class or has legendary capability with this skill.