Be a zombie! by ianmonster457

Put this next to a fill clock: /execute @a ~ ~ ~ /tp @e[type=Zombie] @p

It will make a zombie teleport to you. make sure to do /gamerule doMobSpawning false, then /kill @e[type=Zombie]

Next do this /effect @a minecraft:invisibility 10000 1.

Finally summon a zombie!