Snowman's Big Head | Minecraft | 1 Command

/summon falling_block ~ ~1 ~ {Block:"redstone_block",Time:3,Passengers:[{id:"falling_block",Block:"activator_rail",Time:3,Passengers:[{id:"commandblock_minecart",Command:/gamerule commandBlockOutput false},{id:"commandblock_minecart",Command:/scoreboard objectives add PackTimer dummy},{id:"commandblock_minecart",Command:/scoreboard objectives add SnowmanHeadThrow stat.useItem.minecraft.snowball},{id:"commandblock_minecart",Command:/fill ~2 ~-2 ~-1 ~6 ~4 ~1 stained_hardened_clay 0 hollow},{id:"commandblock_minecart",Command:/fill ~2 ~-1 ~-1 ~6 ~3 ~1 stained_glass 14 replace stained_hardened_clay},{id:"commandblock_minecart",Command:/summon falling_block ~3 ~-1 ~ {Block:repeating_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players add SnowmansHead PackTimer 1},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:1,TileEntityData:{Command:/scoreboard players test SnowmansHead PackTimer 15},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:9,TileEntityData:{Command:/scoreboard players set SnowmansHead PackTimer 0},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:repeating_command_block,Data:9,TileEntityData:{auto:1b,Command:/entitydata @e[type=snowman,tag=!SnowmanHeadAdd] {ArmorItems:[{id:"minecraft:skull",Damage:3s,Count:1b,tag:{SkullOwner:"MHF_Pumpkin",ench:[{id:-1}],SnowmanHead:1b,display:{LocName:"Snowman's Big Head",Lore:["A magically","cold berry!"]}}},{},{},{}]}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:5,TileEntityData:{Command:/scoreboard players tag @e[type=snowman,tag=!SnowmanHeadAdd] add SnowmanHeadAdd},Time:1,DropItem:0}]}]}]}]}},{id:"commandblock_minecart",Command:/summon falling_block ~4 ~-1 ~ {Block:chain_command_block,Data:5,TileEntityData:{Command:clear @a[tag=KillSnowmanHead] minecraft:skull 3 1 {SnowmanHead:1b}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/scoreboard players tag @a add KillSnowmanHead {Fire:1s}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:repeating_command_block,Data:0,TileEntityData:{auto:1b,Command:/scoreboard players tag @a remove KillSnowmanHead},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/scoreboard players tag @a add WearSnowmanHead {Inventory:[{Slot:103b,tag:{SnowmanHead:1b}}]}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/scoreboard players tag @a remove WearSnowmanHead},Time:1,DropItem:0}]}]}]}]}},{id:"commandblock_minecart",Command:/summon falling_block ~5 ~-1 ~ {Block:chain_command_block,Data:1,TileEntityData:{Command:/execute @a[tag=WearSnowmanHead,score_SnowmanHeadThrow_min=1,m=0] ~ ~ ~ summon item ~ ~ ~ {Item:{id:"minecraft:snowball",Count:1b}}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:1,TileEntityData:{Command:/execute @a[tag=WearSnowmanHead,score_SnowmanHeadThrow_min=1,m=2] ~ ~ ~ summon item ~ ~ ~ {Item:{id:"minecraft:snowball",Count:1b}}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:1,TileEntityData:{Command:/scoreboard players remove @a[score_SnowmanHeadThrow_min=1] SnowmanHeadThrow 1},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:stained_hardened_clay,Data:0,Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:stained_hardened_clay,Data:0,Time:1,DropItem:0}]}]}]}]}},{id:"commandblock_minecart",Command:setblock ~1 ~1 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"click here\\\",\\\"color\\\":\\\"dark_red\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/particle explode ~3.5 ~-.5 ~ 1.25 2 1 .01 75 normal\\\"}}",Text2:"{\\\"text\\\":\\\"to remove\\\",\\\"color\\\":\\\"dark_red\\\"}",Text3:"{\\\"text\\\":\\\"this machine\\\",\\\"color\\\":\\\"dark_red\\\"}",Text4:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-3 ~-1 ~5 ~3 ~1 air\\\"}}"}},{id:"commandblock_minecart",Command:/setblock ~ ~1 ~ command_block 1 0 {auto:1b,Command:fill ~ ~ ~ ~ ~-2 ~ air}},{id:"commandblock_minecart",Command:kill @e[r=2,type=commandblock_minecart]}]}]}