#execute as @e[type=trident,tag=!plussed] run data merge entity @s {damage:4}
#execute as @e[type=trident,tag=!plussed,nbt={item:{components:{"minecraft:custom_data":{stucktrident:tag}}}}] at @s if entity @p Rotation
execute as @e[type=trident,tag=!plussed] run tag @s add plussed