Wither's Bane Only one command By Stealthwhale

/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:fill ~ ~0 ~1 ~ ~-12 ~1 redstone_block},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~ ~3 ~1 stone},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~ ~4 ~ command_block 0 replace {Command:fill ~ ~2 ~ ~ ~-16 ~1 air}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/tellraw @a ["",{"text":"Wither's Bane Vanilla modpack by Stealthwhale installing...","color":"black","bold":"true","italic":"true","underlined":"true","clickEvent":{"action":"open_url","value":"https://www.youtube.com/channel/UCGuNJ4PedeoatoDqVqHHIRg"},"hoverEvent":{"action":"show_text","value":{"text":"","extra":[{"text":"Click to go to Stealthwhale's channel!"}]}}}]},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard objectives add WitherItem dummy},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard objectives add Witherblade stat.useItem.minecraft.stone_sword},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard objectives add Wsword dummy},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/summon FallingSand ~2 ~ ~-1 {Block:command_block,TileEntityData:{Command:},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard players set @a Witherblade 0},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/execute @e[score_WitherItem_min=1,score_WitherItem=1] ~ ~ ~ /execute @e[score_WitherItem_min=2,score_WitherItem=2] ~ ~ ~ /summon Item ~ ~ ~ {CustomName:"Wither's Bane",CustomNameVisible:1,Item:{id:stone_sword,Count:1,tag:{display:{Name:Wither's Bane,Lore:[Leech life from your foes]},ench:[{id:21,lvl:1}]}},PickupDelay:0}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard players set @e[type=Item] WitherItem 1 {Item:{id:"minecraft:stone_sword"}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/effect @a[score_Witherblade_min=1] 20 0},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/execute @a[score_Witherblade_min=1] ~ ~ ~ /effect @e[r=4] 20 3 1},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/execute @e[score_WitherItem_min=3] ~ ~ ~ /kill @e[score_WitherItem_min=1,score_WitherItem=2,r=2]},Time:1,}}}}}}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/summon FallingSand ~2 ~ ~1 {Block:command_block,TileEntityData:{Command:},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard players set @e[type=Item] WitherItem 3 {Item:{tag:{display:{Name:"Wither's Bane"}}}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard players set @e[type=Item] WitherItem 2 {Item:{id:"minecraft:skull"}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard players remove @a[score_Wsword_min=1] Wsword 1},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/scoreboard players set @a Wsword 2 {SelectedItem:{id:minecraft:stone_sword,tag:{display:{Name:Wither's Bane}}}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/effect @a[score_Witherblade_min=1] 10 1 2 true},Time:1,}}}}}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:gamerule commandBlockOutput false},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:fill ~2 ~-2 ~ ~2 ~5 ~ redstone_block},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~2 ~-1 ~-1 command_block 0 replace {Command:fill ~ ~ ~1 ~ ~7 ~1 stone 0 replace redstone_block}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~2 ~ ~1 command_block 0 replace {Command:fill ~ ~ ~-1 ~ ~7 ~-1 redstone_block 0 replace stone}},Time:1,Riding:{id:FallingSand,Block:stone,Time:1}}}}}}}}}}}}}}}