sword = 3001 or 3000010
crossbow(mainhand standing) = 3001 or 3000010
fungus on a stick = 4000


#Selected item

execute as @a[nbt={SelectedItem:{id:"minecraft:netherite_sword",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{Charged:0b,display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
execute as @a[nbt={SelectedItem:{id:"minecraft:warped_fungus_on_a_stick",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}] run say 1
execute as @a[nbt={SelectedItem:{id:"minecraft:shield",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#offhand

execute as @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:netherite_sword",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
execute as @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:crossbow",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
execute as @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:crossbow",tag:{Charged:0b,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
execute as @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:warped_fungus_on_a_stick",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
execute as @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:shield",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]

#inventory

execute as @a[nbt={Inventory:[{id:"minecraft:crossbow",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
execute as @a[nbt={Inventory:[{id:"minecraft:warped_fungus_on_a_stick",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
execute as @a[nbt={Inventory:[{id:"minecraft:shield",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]



#___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



##dropped item


#block
execute as @e[type=item,nbt={Item:{id:"minecraft:shield",tag:{CustomModelData:3999000,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#combo1
execute as @e[type=item,nbt={Item:{id:"minecraft:crossbow",tag:{CustomModelData:2999410,display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
#combo2
execute as @e[type=item,nbt={Item:{id:"minecraft:netherite_sword",tag:{display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#pierce
execute as @e[type=item,nbt={Item:{id:"minecraft:netherite_sword",tag:{CustomModelData:3999000,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
execute as @e[type=item,nbt={Item:{id:"minecraft:crossbow",tag:{CustomModelData:3999001,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
execute as @e[type=item,nbt={Item:{id:"minecraft:warped_fungus_on_a_stick",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]


##special features

#air
execute as @a[nbt={OnGround:0b,SelectedItem:{id:"minecraft:netherite_sword",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#combo
item replace entity @a[tag=snk,nbt={OnGround:1b,SelectedItem:{id:"minecraft:crossbow",tag:{CustomModelData:3999001,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
item replace entity @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{CustomModelData:2999410,display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
item replace entity @a[nbt={OnGround:1b,SelectedItem:{id:"minecraft:crossbow",tag:{CustomModelData:2999410,display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
item replace entity @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{Charge:0b,CustomModelData:2999410,display:{Name:'[{"text":"Tsukuyomi blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#dash
item replace entity @a[tag=!ps,nbt={Inventory:[{Slot:-106b,id:"minecraft:crossbow",tag:{CustomModelData:3999001,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]

#pierce
execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{CustomModelData:3999001,Charged:0b,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
scoreboard players set @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{CustomModelData:3999001,display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#slash
item replace entity @a[tag=!holding,nbt={SelectedItem:{id:"minecraft:netherite_sword",tag:{AttributeModifiers:[{AttributeName:"generic.attack_speed",Name:"generic.attack_speed",Slot:"mainhand",Amount:20}],display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
item replace entity @a[tag=holding,nbt={SelectedItem:{id:"minecraft:netherite_sword",tag:{AttributeModifiers:[{AttributeName:"generic.attack_speed",Name:"generic.attack_speed",Slot:"mainhand",Amount:-2.4}],display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#special2
scoreboard players add @a[tag=enableee,tag=buriedd,scores={thelight=1..},nbt={OnGround:1b,SelectedItem:{id:"minecraft:warped_fungus_on_a_stick",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]

#sprint
execute as @a[scores={sprint=1..},nbt={OnGround:1b,Inventory:[{Slot:-106b,id:"minecraft:netherite_sword",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]

#up
effect give @a[scores={r=1..10},nbt={SelectedItem:{id:"minecraft:netherite_sword",tag:{AttributeModifiers:[{AttributeName:"generic.attack_speed",Name:"generic.attack_speed",Slot:"mainhand",Amount:20}],display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]
tag @a[tag=jumpslashh,scores={jumpringg=1..},nbt={active_effects:[{id:"minecraft:jump_boost"}],SelectedItem:{id:"minecraft:netherite_sword",tag:{AttributeModifiers:[{AttributeName:"generic.attack_speed",Name:"generic.attack_speed",Slot:"mainhand",Amount:20}],display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}}]




#___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________




#low
execute as @a[nbt={Inventory:[{Slot:103b,id:"minecraft:carved_pumpkin",tag:{display:{Name:'[{"text":"Fullmoon","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]
#hi
execute as @a[nbt={Inventory:[{Slot:103b,id:"minecraft:carved_pumpkin",tag:{display:{Name:'[{"text":"Fullmoon Ascended","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]

#___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

#check for enchantments when updating to 1.21


execute as @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:shield",tag:{display:{Name:'[{"text":"Tsukuyomi Blade","color":"gray","italic":true,"bold":true},{"text":"","color":"gray","italic":false,"bold":false}]'}}}]}]


{Slot:-106b,id:"minecraft:netherite_sword",components:{"minecraft:custom_name":'{"extra":[{"bold":true,"color":"gray","text":"Tsukuyomi Blade"}],"text":""}'}}




sword

offhand
execute if entity @a[nbt={Inventory:[{Slot:-106b,id:"minecraft:netherite_sword",components:{"minecraft:custom_name":'{"extra":[{"bold":true,"color":"gray","text":"Tsukuyomi Blade"}],"text":""}'}}]}]
mainhand
execute if entity @a[nbt={SelectedItem:{id:"minecraft:netherite_sword",components:{"minecraft:custom_name":'{"extra":[{"bold":true,"color":"gray","text":"Tsukuyomi Blade"}],"text":""}'}}}]