DotA 6.71 Bug & Expoit has been found. After having so many bug fixes in this DotA 6.71, a new bug has been discovered. It is with Zeus Thundergod's Wrath upgraded version. It will deal massive amount of damage after Aghanim's Scepter upgrade which can instantly kill your opponents.
DotA 6.71 Bug - Thundergod's Wrath:
Pick Zeus, get Thundergod's Wrath (must be Level 2 or 3) and Buy Aghanim's Scepter Upgrade. Now cast your ultimate when your enemy heroes are very close to each other (between 400-600 Area of Effect). Your ultimate will deal chain lightnings in that Area of Effect which will result in a huge damage depending how much heroes were present at the time of cast. With 5 heroes the damage can reach upto 2000+
This bug can be game breaking at some point. Hope IceFrog releases DotA 6.71b soon for it's fix.