Fire Crawler Mob In One Command | Minecraft

/summon FallingSand ~ ~1 ~ {Block:"redstone_block",Time:3,Passengers:[{id:"FallingSand",Block:"activator_rail",Time:3,Passengers:[{id:"MinecartCommandBlock",Command:/gamerule commandBlockOutput false},{id:"MinecartCommandBlock",Command:/scoreboard objectives add PackTimer dummy},{id:"MinecartCommandBlock",Command:/scoreboard objectives add PigZomCount dummy},{id:"MinecartCommandBlock",Command:/fill ~2 ~-2 ~-1 ~9 ~2 ~1 stained_glass 14 hollow},{id:"MinecartCommandBlock",Command:fill ~2 ~-2 ~-1 ~9 ~-2 ~1 stained_hardened_clay 10},{id:"MinecartCommandBlock",Command:/fill ~2 ~2 ~-1 ~9 ~2 ~1 stained_hardened_clay 10},{id:"MinecartCommandBlock",Command:/summon FallingSand ~3 ~-1 ~ {Time:3,Block:chain_command_block,Data:1,TileEntityData:{Command:/execute @e[type=PigZombie,tag=!SpawnedFireC] ~ ~ ~ scoreboard players add PZC PigZomCount 1},Passengers:[{id:"FallingSand",Data:5,Block:chain_command_block,Time:3,TileEntityData:{Command:"/scoreboard players test PZC PigZomCount 5"},Passengers:[{id:"FallingSand",Time:3,Block:"chain_command_block",Data:1,TileEntityData:{Command:/execute @e[tag=FireSpray] ~ ~ ~ fill ~-1 ~-1 ~-1 ~1 ~1 ~1 fire 0 replace air}}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~4 ~-1 ~ {Time:3,Block:repeating_command_block,Data:12,TileEntityData:{auto:1b,Command:/scoreboard players set PZC PigZomCount 0},Passengers:[{id:"FallingSand",Data:13,Block:chain_command_block,Time:3,TileEntityData:{Command:/execute @r[type=PigZombie,tag=!SpawnedFireC] ~ ~ ~ scoreboard players set @e[c=1,dx=0] PigZomCount 1},Passengers:[{id:"FallingSand",Time:3,Block:"chain_command_block",Data:4,TileEntityData:{Command:/execute @e[tag=FireSpray] ~ ~ ~ /particle lava ~ ~.5 ~ .5 .25 .5 .2 10 normal}}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~5 ~-1 ~ {Time:3,Block:chain_command_block,Data:12,TileEntityData:{Command:/scoreboard players set FireCrawl PackTimer 0},Passengers:[{id:"FallingSand",Data:13,Block:chain_command_block,Time:3,TileEntityData:{Command:/execute @e[tag=!SpawnedFireC,score_PigZomCount_min=1,type=PigZombie] ~ ~ ~ summon Spider ~ ~ ~ {Tags:["FireCrawler"],CustomNameVisible:1b,CustomName:"Fire Crawler"}},Passengers:[{id:"FallingSand",Time:3,Block:"chain_command_block",Data:4,TileEntityData:{Command:/scoreboard players tag @e[tag=FireCrawler] add FireSpray {HurtTime:1s}}}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~6 ~-1 ~ {Time:3,Block:chain_command_block,Data:4,TileEntityData:{Command:/scoreboard players test FireCrawl PackTimer 20},Passengers:[{id:"FallingSand",Data:13,Block:chain_command_block,Time:3,TileEntityData:{Command:/scoreboard players tag @e[tag=!SpawnedFireC,score_PigZomCount_min=1,type=PigZombie] add SpawnedFireC},Passengers:[{id:"FallingSand",Time:3,Block:"repeating_command_block",Data:4,TileEntityData:{auto:1b,Command:/scoreboard players tag @e[tag=FireCrawler] remove FireSpray}}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~7 ~-1 ~ {Time:3,Block:repeating_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players add FireCrawl PackTimer 1},Passengers:[{id:"FallingSand",Data:13,Block:chain_command_block,Time:3,TileEntityData:{Command:/scoreboard players tag @e[type=PigZombie,c=4,tag=!SpawnedFireC] add SpawnedFireC},Passengers:[{id:"FallingSand",Time:3,Block:"chain_command_block",Data:4,TileEntityData:{Command:/effect @e[tag=FireCrawler] speed 10 1 true}}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~8 ~-1 ~ {Time:3,Block:stained_hardened_clay,Data:10,Passengers:[{id:"FallingSand",Data:1,Block:chain_command_block,Time:3,TileEntityData:{Command:/effect @e[tag=FireCrawler] minecraft:fire_resistance 10 1 true},Passengers:[{id:"FallingSand",Time:3,Block:"chain_command_block",Data:4,TileEntityData:{Command:/execute @e[tag=FireCrawler] ~ ~ ~ particle flame ~ ~.5 ~ .25 .25 .25 .05 25 normal}}]}]}},{id:"MinecartCommandBlock",Command:kill @e[r=2,type=MinecartCommandBlock]}]}]}