i have been useing command blocks useing the command /summon EnderDragon ~ ~1 ~ {NoAI:1} when i do that the dragon is not moveing its just standing there you can't hit it or kill it you have to use @e to kill it bow and sword and hand does not work
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NoAI means that the entity isn't affected by gravity anymore and also won't move (except FallingSand), for more information visit the Wiki
The second part is probably MC-74114