Shadow
From MHWiki
"Shadow is a magical type of damage that is effective against ghostly breeds of mice."
The Shadow power type of weapons can catch the majority of Mousoleum mice. Shadow weapons are generally not recommended for use against most other breeds due to their low Power.
Types of Shadow weapons
Effectiveness
Shadow traps are very effective against Shadow Mice, namely:
They can also catch Forgotten and Physical mice without any bonus or penalty.