Vlaka's ancestry feat 9 Menacing Snarl has a few issues
1. It shares the same name as Vesk's ancestry feat 5 with different mechanics.
2. It is free action no-trigger no frequency limit, which means you can increase Frightened on any already Frightened creature within 30 ft. Even with the temporary immunity, this is extremely strong to combo with Fear (heightened 3) or AoE Demoralize abilities.
3. "The target then becomes temporarily immune to YOUR Menacing Snarl for 24 hours", emphasis mine. This means all party Vlaka can increase Frightened by 4 stacks. If Vesk's same feat were treated as a separate entity and stacks, the party can make an enemy Frightened 9 using only free actions!
