The Edo Tensei is a forbidden Naruto technique that binds deceased souls to living sacrifices, granting them immortal, regenerating bodies with infinite chakra. While providing these advantages, the reanimated individuals typically operate at a lower power output compared to their living state. For a detailed breakdown of the technique's requirements, you can read discussions on Reddit.
There is common belief that shinra tensei takes 5 second cooldown. EdoTensei.txt