en 1.8 /give Zaubertränke Can't resist to troll your friends? Use this potion of doom to troll them! MWA HA HA HA!!
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Simply give the potion to your target, then let them drink it!
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Check out my account for more command creations!
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How To Install Windows:

1. Copy the command (CTRL + C)

2. Go in a world in creative

3. Do /give @p command_block

4. Place it down and open up the interface

5. Paste in the command (CTRL + V)

6. Activate the command block

7. Give the potion to your target

8. WATCH THEM SUFFER!!