Minecraft Custom Weapons

Video Link Explaining These Commands:https://youtu.be/FLT6pyk6VtI

Names and Lores
/give @p minecraft:iron_sword 1 0 {display:{Name:"Knife",Lore:["Backstab"]}}

Enchantments
/give @p minecraft:diamond_sword 1 0 {ench:[{id:16,lvl:5},{id:17,lvl:3},{id:18,lvl:3},{id:19,lvl:2},{id:20,lvl:3}]}

Attribute Modifiers
/give @p minecraft:stone_sword 1 0 {AttributeModifiers:[{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.5,operation:1,UUIDMost:3,UUIDLeast:2,Slot:"mainhand"}]}

All in One
/give @p minecraft:golden_sword 1 0 {AttributeModifiers:[{AttributeName:"generic.maxHealth",Name:"generic.maxHealth",Amount:20,operation:1,UUIDLeast:1,UUIDMost:2,Slot:"mainhand"},{AttributeName:"generic.armor",Name:"generic.armor",Amount:5,operation:1,UUIDLeast:3,UUIDMost:4,Slot:"offhand"}],display:{Name:"Golden Dagger",Lore:["The Dagger of Kings"]},ench:[{id:16,lvl:10},{id:34,lvl:10},{id:34,lvl:10}]}

All in One (Including HideFlags and Unbreakable)
/give @p minecraft:golden_sword 1 0 {HideFlags:1,Unbreakable:1,AttributeModifiers:[{AttributeName:"generic.maxHealth",Name:"generic.maxHealth",Amount:20,operation:1,UUIDLeast:1,UUIDMost:2,Slot:"mainhand"},{AttributeName:"generic.armor",Name:"generic.armor",Amount:5,operation:1,UUIDLeast:3,UUIDMost:4,Slot:"offhand"}],display:{Name:"Golden Dagger",Lore:["The Dagger of Kings"]},ench:[{id:16,lvl:10},{id:34,lvl:10},{id:34,lvl:10}]}

Dragon Sword
/summon Item ~ ~1.2 ~ {CustomName:"Dragon Sword",CustomNameVisible:1,Item:{id:stone_sword,Count:1,tag:{AttributeModifiers:[{AttributeName:"generic.maxHealth",Name:"generic.maxHealth",Amount:40,Operation:0,UUIDLeast:502528,UUIDMost:839202,Slot:"mainhand"},{AttributeName:"generic.knockbackResistance",Name:"generic.knockbackResistance",Amount:0.4,Operation:1,UUIDLeast:989880,UUIDMost:23168,Slot:"mainhand"},{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.6,Operation:1,UUIDLeast:551737,UUIDMost:431744,Slot:"mainhand"},{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:105,Operation:0,UUIDLeast:15281,UUIDMost:685584,Slot:"mainhand"},{AttributeName:"generic.attackSpeed",Name:"generic.attackSpeed",Amount:0.3,Operation:0,UUIDLeast:23791,UUIDMost:360678,Slot:"mainhand"}],display:{Name:"Dragon Sword"},ench:[{id:16,lvl:3},{id:17,lvl:3},{id:18,lvl:3},{id:19,lvl:3},{id:20,lvl:3},{id:21,lvl:3}]}}}

Mooshroom Sword
/give @p minecraft:diamond_sword 1 0 {AttributeModifiers:[{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.5,Operation:0,UUIDLeast:968173,UUIDMost:814877,Slot:"mainhand"},{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:50,Operation:0,UUIDLeast:262062,UUIDMost:187384,Slot:"mainhand"},{AttributeName:"generic.attackSpeed",Name:"generic.attackSpeed",Amount:1.4,Operation:0,UUIDLeast:725095,UUIDMost:676749,Slot:"mainhand"}],display:{Name:"Mooshroom Sword",Lore:[Moo]},ench:[{id:16,lvl:10},{id:16,lvl:10},{id:34,lvl:10},{id:19,lvl:5},{id:20,lvl:5}]}

Mooshroom Sword Special Effects (This was created using MrGarretto's Command Combiner, http://mrgarretto.com/cmdcombiner)

/summon FallingSand ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:FallingSand,Block:redstone_block,Time:1,Passengers:[{id:FallingSand,Block:activator_rail,Time:1,Passengers:[{id:MinecartCommandBlock,Command:"/scoreboard objectives add moo dummy"},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~1 chain_command_block 4 replace {auto:1,Command:"/scoreboard players reset @a[score_moo_min=1] moo"}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~1 chain_command_block 4 replace {auto:1,Command:"/replaceitem entity @a[score_moo_min=1] slot.armor.head minecraft:skull 1 3 {SkullOwner:Brainthecoo}"}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~ chain_command_block 3 replace {auto:1,Command:"/effect @a[score_moo_min=1] minecraft:regeneration 1 1"}},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"/effect @a[score_moo_min=1] minecraft:jump_boost 1 3"}},{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"/execute @a[score_moo_min=1] ~ ~ ~ summon Item ~ ~ ~ {Motion:[0.0,0.2,0.0],Item:{id:red_mushroom_block},Age:5980,PickUpDelay:32767}"}},{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"/execute @a[score_moo_min=1] ~ ~ ~ summon Item ~ ~2 ~ {Motion:[0.0,0.2,0.0],Item:{id:red_mushroom},Age:5980,PickUpDelay:32767}"}},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ repeating_command_block 5 replace {auto:1,Command:"/scoreboard players set @a moo 1 {SelectedItem:{id:minecraft:diamond_sword,tag:{display:{Name:\\\"Mooshroom Sword\\\"}}}}"}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}

Enchantment IDs

Protection 0
Fire Protection 1
Feather Falling 2
Blast Protection 3
Projectile Protection 4
Respiration 5
Aqua Affinity 6
Thorns 7
Depth Strider 8
Frost Walker 9
Sharpness 16
Smite 17
Bane of Arthropods 18
Fire Aspect 19
Knockback 20
Looting 21
Efficiency 32
Silk Touch 33
Unbreaking 34
Fortune 35
Power 48
Punch 49
Flame 50
Infinity 51
Luck of the Sea 61
Lure 62
Mending 70

Attribute Names

generic.maxHealth
generic.movementSpeed
generic.knockbackResistance
generic.attackDamage
generic.attackSpeed
generic.armor
generic.armorToughness
generic.luck
generic.followRange