Stealth

Introduction
Normally in Minecraft, when walking in the aggro range of a mob, they would attack. However, holding shift would mean they would only be able to see you if you were right in front of them or directly behind them. You would walk forward while holding shift, and your attack would do more damage while helping you act as a stealthy warrior in Minecraft.

Stealth
Many people play Assassins Creed, Hitman, or any other stealth game. On the other hand, in Minecraft there is no stealth, meaning stealthy players climbing buildings cannot be an assassin in Minecraft. Adding this idea would also add another way to kill mobs. A new item could be added with the Stealth update, like a dagger. The dagger would be a small sword that would do more damage than a sword when the player is holding shift but would do less damage when attacking the mob in plain sight.