ArcoMetralleta

/testfor @p {SelectedItemSlot:0,Inventory:[{tag:{display:{Name:Balas}}}]}

/testfor @p {SelectedItemSlot:0,Inventory:[{Slot:0b,tag:{display:{Name:Metralleta}}}]}

effect @p 2 1000 2 true

setblock 1024 13 -1134 redstone_block

/kill @e[type=Arrow]

execute @p ~ ~ ~ /particle smoke ~ ~1 ~ 0.3 0.3 0.3 0.01 30

/clear @p arrow 0 1

give @p minecraft:bow 1 0 {AttributeModifiers:[{Operation:0,UUIDLeast:4,UUIDMost:4,Amount:100.0,AttributeName:generic.knockbackResistance,Name:LeadF}],display:{Name:"Metralleta"}}

/give @p arrow 64 0 {display:{Name:"Balas"}}

playsound random.click @p ~ ~1 ~ 1000 0.1