Comando 12

Bloque impulso:
/summon minecraft:wither ~1 ~-.5 ~ {NoAI:1b}

Bloque repetidor:
/tp @e[type=minecraft:wither,limit=1] @p

Bloques de cadena:
(Orden: de abajo a arriba)
#1 /team add morph
#2 /team modify morph collisionRule never
#3 /team modify morph seeFriendlyInvisibles false
#4 /execute as @e[type=minecraft:wither] run team join morph
#5 /execute as @p run team join morph
#6 /effect give @p minecraft:invisibility 1000000 255 true