Untouchable

With this mod, you turn into an invulnerable ghost! Hostile mobs still notice you, track you and attempt to strike, yet any damage from them is completely blocked.

Key features:

• All mob attacks do no harm to your character; 
• Arrows/trails and all projectiles pass through you visualy but have zero effect;
• While hostile powers can’t interact physically with you, enemies keep trying to attack.

How to use

Input the simple command /untouchable directly into Minecraft chat anytime to toggle this protective state.

Without clicking with /gamerule naturalRegeneration false, regen still up
This is not considered a cheat and must be installed as a proper server mod for features to work properly — designed for customized survival/multiplayer use.