Minecraft wiki entry for Player_versus_Player, associated text: Most servers have anti-flying plugins installed to prevent hacking users. If your server has one, use it! Spamming hits from a Knockback II sword will send your enemy flying fast enough to trick the server into counting them as flying, so that they will be immediately kicked (possibly banned) from the server. If there is a combat logging plugin as well, all the better! Your opponent will drop whatever loot was in their inventory for your enjoyment. Though you can be banned from many servers from exploiting any server side anti-cheat programs.