Metal Shulker | 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:/fill ~2 ~-2 ~-1 ~6 ~3 ~1 stained_hardened_clay 11 hollow},{id:"commandblock_minecart",Command:/fill ~2 ~-1 ~-1 ~6 ~2 ~1 stained_glass 7 replace stained_hardened_clay},{id:"commandblock_minecart",Command:/summon falling_block ~3 ~-1 ~ {Block:chain_command_block,Data:1,TileEntityData:{Command:/scoreboard players test MetalShulker PackTimer 60},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:9,TileEntityData:{Command:/scoreboard players set MetalShulker PackTimer 0},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:repeating_command_block,Data:9,TileEntityData:{auto:1b,Command:execute @e[type=shulker] ~ ~ ~ /scoreboard players tag @e[type=item,dy=2] add MetalShulkerA {Item:{id:"minecraft:iron_ingot",Count:8b},OnGround:1b}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:5,TileEntityData:{Command:/execute @e[tag=MetalShulkerA] ~ ~ ~ scoreboard players tag @e[dy=-2,c=1,type=shulker] add MetalShulker},Time:1,DropItem:0}]}]}]}},{id:"commandblock_minecart",Command:/summon falling_block ~4 ~-1 ~ {Block:repeating_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players add MetalShulker PackTimer 1},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:repeating_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players tag @e[tag=MetalShulker] remove TPPlayerMS},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/execute @e[tag=MetalShulker] ~ ~ ~ effect @a[r=5] wither 2 29 true},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:5,TileEntityData:{Command:/execute @e[tag=MetalShulkerA] ~ ~ ~ scoreboard players tag @e[dy=-2,c=1,type=shulker] add MetalShulkerS},Time:1,DropItem:0}]}]}]}},{id:"commandblock_minecart",Command:/summon falling_block ~5 ~-1 ~ {Block:chain_command_block,Data:0,TileEntityData:{Command:/execute @e[tag=TPPlayerMS] ~ ~ ~  execute @p ~ ~ ~ /spreadplayers ~ ~ 1 3 false @e[tag=TPPlayerMS]},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/scoreboard players tag @e[tag=MetalShulker] add TPPlayerMS {HurtTime:10s}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:4,TileEntityData:{Command:/entitydata @e[tag=MetalShulkerS] {Tags:["MetalShulker"],Color:8,ArmorItems:[{id:"iron_ingot",Count:4},{id:"iron_ingot",Count:4},{id:"iron_ingot",Count:4},{id:"iron_helmet",Count:1b,tag:{display:{LocName:"Metal Shulker Shell"},ench:[{id:7s,lvl:15s}]}}],ArmorDropChances:[0.25F,0.25F,0.25F,0.25F],CustomName:"Metal Shulker",CustomNameVisible:1b,Attributes:[{Name:generic.maxHealth,Base:40}],Health:40}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/kill @e[tag=MetalShulkerA]},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 1.75 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 ~2 ~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]}]}]}