data merge entity @s {Tags:[witherarrow,specialarrow],item:{components:{potion_contents:{custom_effects:[{id:wither,duration:100}]}},pickup:2b}}
playsound entity.wither.shoot player @a ~ ~ ~ .7
#data merge entity @n[type=wither_skull] {Tags:[specialarrow,skullarrow]}
data modify entity @n[type=wither_skull,tag=!wsd] Motion set from entity @s Motion
data modify entity @n[type=wither_skull,tag=!wsd] Owner set from entity @p[predicate=survivalplus:bow/skullbow] UUID
execute as @n[type=wither_skull,tag=!wsd] run tag @s add wsd
execute if entity @s[predicate=survivalplus:adventuremode] run kill @n[type=wither_skull]
kill @s[predicate=!survivalplus:adventuremode]