• DESCRIPTION
  
  

I like the PERKUS MAXIMUS overhaul by T3ndos, it needs some difficult mods on it to have the perfect synergy.
This is my personal suggestion for the Shadowbound perk in sneak tree, becuase 2 minutes of invisibility is a bit supernatural for my taste

•  It would be nice to specify you need to have weapons or magic out in the description
•  I have done a similar work with shadowwarrior perk in vanilla (it was too op in vanilla), but instead of adding a cd to it I have added some light levels requirements.
  
  

I have uploaded 4 options to make sure you can choose one of them.

• Normal Plugin.  The perk Shadowbound at first level require a light level lower than 30, and has a duration of 2 seconds, which is ideal to choose combats and flee from thoose you still need to prepare or pocke before the real comabt, it also could help you if you are close enougth  to another shadow or to  get a perfect ambush at small distances. At second level of the perk, it extends its duration to 5 seconds, which is enough to move along half of a room and get at behind of a target or find another shadow
• Normal+Extended description. Same as last Normal Plugin, but it has an extended description, like the ones in the mod  Defluffling PerMa and PerMa Extended Perks Description by GioGr.
• Hardcore Plugin. The perk Shadowbound at first level require a light level lower than 20, and has a duration of 2 seconds, which is ideal to choose combats and flee from thoose you still need to prepare or want to pocke before real combat, it also could help you if you are close enougth  to another shadow or to get a perfect ambush at small distances. At second level of the perk, it extends its duration to 5 seconds, which is enough to move along half of a room and get at behind of a target or find another shadow
• Hardcore Plugin+Extended Description. Same as Hardcore plugin but has an extended description.
  
  

This far, both Hardcore plugins are thinked for temerarious ninjas or people who uses Dark nights and dark dungeons, or any other mod wich makes Skyrim darker and more dangerous

I had to edit also the Vaermina's Refuge perk, to be more compatible with this new shadowbound, so it provides an additional regeneration of 30% only, but it has no cooldown neither (because shadowbound has none), it requires same light level to be active instead

It is much more usefull and immersive with Sneak Tools and darkness mods (but climates of tamriel, even light is shadow in this mod) and immersive NPC in the dark (they use lanterns to look for you).  There is much more sinergy with the perk Thief Tools, both given by the prodigy perk, not it is more rewarding to turn on lights in strategical points, so you could see your enemies, but  they don't, and the most important, you can use water arrows to make sure a dark path or refuge  for you, just like Nocturnal would want. 

In fact you need to think like a ninja and shadows are much more than an estetic or visual effect, they are your home now. I would really like to share this contribution with all of you.

• REQUIREMENTS
  
  

Perkus Maximus by T3nd0 obviously

• INSTALLATION
  
  

With manager: Just use NMM or MO
Manually:Copy the choosen esp to the data folder

• UNINSTALL
  

With manager:You can use NMM or MO to uninstall
Manually:Just delete the esp used from data folder

• RECOMMENDED MODS
  
  

Immersive NPC in the Dark by by hacknpaint
Mike Foxs Darker Nights by Mike Fox
Mike Foxs Darker Dungeons by Mike Fox
AH Hotkeys - Skyrim Hotkey Manager by RealAntithesis

• INCOMPATIBILITIES
  

Any other mod which changes Shadowbound Perk

Any suggestion is wellcome. I had already done a similar mod for Requiem, but I want to check it here before