The Sly Devolution mod allows the Sly Vulpaphyla to devolve into its larval form upon death. Any kills made by the owner will grant an Evasion buff. The Vulpaphyla will respawn after 30 seconds.

This mod is unique to the Sly Vulpaphyla, and will be given to players upon revivification of a Sly Vulpaphyla.


Rank Evasion Duration Cost
0 5% 2s 0
1 10% 4s 1
2 15% 6s 2
3 20% 8s 3


  • The larval form floats beside the owner, similar to a Sentinel.
  • Devolution prevents bleedout and thus the Vulpaphyla cannot be revived normally. Its transformation also cannot be sped up.
  • Duration is not increased by Mod TT 20px.png Tek Enhance.
  • Additional kills will refresh the buff duration.

Patch History[]

Hotfix 30.7.6 (2021-09-23)

  • Fixed Vulpaphyla ‘Sentinel’ form not retaining colour customizations.

Update 29.10 (2021-03-19)

  • Fixed Sly Devolution buff showing same evasion values as Survival Instinct when activated. Numbers now match Mod description.

Hotfix 29.0.2 (2020-08-26)

  • Fixed crazy decimals on the Sly Devotion Mod descriptions.

Update 29.0 (2020-08-25)

  • Introduced