A horse.
Achtung: Minifiziere den Command um Probleme zu vermeiden :)
Heart Canisters in Vanilla 1.8
Dagger (1.9)
Example tellraw
Health Indicator in Vanilla Minecraft
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)