Meteors with Only One Command

/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:gamerule commandBlockOutput false},{id:MinecartCommandBlock,Command:fill ~2 ~-3 ~-2 ~8 ~2 ~2 stained_hardened_clay 2 hollow},{id:MinecartCommandBlock,Command:fill ~2 ~-2 ~-2 ~8 ~1 ~2 stained_glass 14 0 stained_hardened_clay},{id:MinecartCommandBlock,Command:/scoreboard objectives add meteor dummy},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"===============\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_100}}\\\"}}",Text2:"{\\\"text\\\":\\\"Get Meteors\\\",\\\"color\\\":\\\"dark_purple\\\"}",Text3:"{\\\"text\\\":\\\"Set 3 (Large)\\\",\\\"color\\\":\\\"dark_purple\\\"}",Text4:"{\\\"text\\\":\\\"===============\\\"}"}},{id:MinecartCommandBlock,Command:setblock ~1 ~-1 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"===============\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_50}}\\\"}}",Text2:"{\\\"text\\\":\\\"Get Meteors\\\",\\\"color\\\":\\\"dark_purple\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_60}}\\\"}}",Text3:"{\\\"text\\\":\\\"Set 2 (Medium)\\\",\\\"color\\\":\\\"dark_purple\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_70}}\\\"}}",Text4:"{\\\"text\\\":\\\"===============\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_80}}\\\"}}"}},{id:MinecartCommandBlock,Command:setblock ~1 ~ ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"===============\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_10}}\\\"}}",Text2:"{\\\"text\\\":\\\"Get Meteors\\\",\\\"color\\\":\\\"dark_purple\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_20}}\\\"}}",Text3:"{\\\"text\\\":\\\"Set 1 (Small)\\\",\\\"color\\\":\\\"dark_purple\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_30}}\\\"}}",Text4:"{\\\"text\\\":\\\"===============\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p spawn_egg 1 0 {EntityTag:{id:Pig,},display:{Name:Meteor_40}}\\\"}}"}},{id:MinecartCommandBlock,Command:setblock ~1 ~1 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/tellraw @p [\\\\\\\"\\\\\\\",{\\\\\\\"text\\\\\\\":\\\\\\\"Click \\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"green\\\\\\\"},{\\\\\\\"text\\\\\\\":\\\\\\\"here\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"aqua\\\\\\\",\\\\\\\"italic\\\\\\\":true,\\\\\\\"underlined\\\\\\\":true,\\\\\\\"clickEvent\\\\\\\":{\\\\\\\"action\\\\\\\":\\\\\\\"open_url\\\\\\\",\\\\\\\"value\\\\\\\":\\\\\\\"https://goo.gl/BP2KUB\\\\\\\"},\\\\\\\"hoverEvent\\\\\\\":{\\\\\\\"action\\\\\\\":\\\\\\\"show_text\\\\\\\",\\\\\\\"value\\\\\\\":{\\\\\\\"text\\\\\\\":\\\\\\\"\\\\\\\",\\\\\\\"extra\\\\\\\":[{\\\\\\\"text\\\\\\\":\\\\\\\"Click me =)\\\\\\\"}]}}},{\\\\\\\"text\\\\\\\":\\\\\\\" to go to my YT-Channel \\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"green\\\\\\\",\\\\\\\"italic\\\\\\\":false,\\\\\\\"underlined\\\\\\\":false}]\\\"}}",Text2:"{\\\"text\\\":\\\"Meteors\\\",\\\"color\\\":\\\"dark_blue\\\"}",Text3:"{\\\"text\\\":\\\"by TCSimon\\\",\\\"color\\\":\\\"dark_red\\\"}",Text4:"{\\\"text\\\":\\\"\\\"}"}},{id:MinecartCommandBlock,Command:setblock ~1 ~2 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"===============\\\"}",Text2:"{\\\"text\\\":\\\"Click to remove\\\"}",Text3:"{\\\"text\\\":\\\"this struckture\\\"}",Text4:"{\\\"text\\\":\\\"===============\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-5 ~-2 ~7 ~ ~2 air\\\"}}"}},{id:MinecartCommandBlock,Command:fill ~3 ~-2 ~-1 ~7 ~1 ~1 chain_command_block 5},{id:MinecartCommandBlock,Command:setblock ~3 ~1 ~1 chain_command_block 2},{id:MinecartCommandBlock,Command:fill ~7 ~1 ~1 ~4 ~1 ~1 chain_command_block 4},{id:MinecartCommandBlock,Command:setblock ~7 ~ ~1 chain_command_block 1},{id:MinecartCommandBlock,Command:setblock ~3 ~ ~ chain_command_block 3},{id:MinecartCommandBlock,Command:fill ~7 ~ ~ ~4 ~ ~ chain_command_block 4},{id:MinecartCommandBlock,Command:setblock ~7 ~ ~-1 chain_command_block 3},{id:MinecartCommandBlock,Command:setblock ~3 ~-1 ~-1 chain_command_block 1},{id:MinecartCommandBlock,Command:fill ~7 ~-1 ~-1 ~4 ~-1 ~-1 chain_command_block 4},{id:MinecartCommandBlock,Command:setblock ~7 ~-1 ~ chain_command_block 2},{id:MinecartCommandBlock,Command:setblock ~3 ~-1 ~1 chain_command_block 2},{id:MinecartCommandBlock,Command:fill ~7 ~-1 ~1 ~4 ~-1 ~1 chain_command_block 4},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~1 chain_command_block 1},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ chain_command_block 3},{id:MinecartCommandBlock,Command:fill ~7 ~-2 ~ ~4 ~-2 ~ chain_command_block 4},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~-1 chain_command_block 3},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~-1 repeating_command_block 5},{id:MinecartCommandBlock,Command:blockdata ~6 ~1 ~ {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~5 ~1 ~ {auto:1,Command:/execute @e[type=Arrow,name=explode_100] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~4 ~1 ~ {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:100}}},{id:MinecartCommandBlock,Command:blockdata ~3 ~1 ~ {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_100] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~3 ~1 ~1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_100] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~4 ~1 ~1 {auto:1,Command:"/execute @e[type=Pig,name=Meteor_100] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_100\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~5 ~1 ~1 {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~6 ~1 ~1 {auto:1,Command:/execute @e[type=Arrow,name=explode_80] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~7 ~1 ~1 {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:80}}},{id:MinecartCommandBlock,Command:blockdata ~7 ~ ~1 {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_80] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~6 ~ ~1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_80] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~5 ~ ~1 {auto:1,Command:"/execute @e[type=Pig,name=Meteor_80] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_80\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~4 ~ ~1 {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~3 ~ ~1 {auto:1,Command:/execute @e[type=Arrow,name=explode_70] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~3 ~ ~ {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:70}}},{id:MinecartCommandBlock,Command:blockdata ~4 ~ ~ {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_70] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~5 ~ ~ {auto:1,Command:/execute @e[type=Pig,name=Meteor_70] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~6 ~ ~ {auto:1,Command:"/execute @e[type=Pig,name=Meteor_70] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_70\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~7 ~ ~ {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~7 ~ ~-1 {auto:1,Command:/execute @e[type=Arrow,name=explode_60] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~6 ~ ~-1 {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:60}}},{id:MinecartCommandBlock,Command:blockdata ~5 ~ ~-1 {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_60] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~4 ~ ~-1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_60] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~3 ~ ~-1 {auto:1,Command:"/execute @e[type=Pig,name=Meteor_60] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_60\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~3 ~-1 ~-1 {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~4 ~-1 ~-1 {auto:1,Command:/execute @e[type=Arrow,name=explode_50] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~5 ~-1 ~-1 {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:50}}},{id:MinecartCommandBlock,Command:blockdata ~6 ~-1 ~-1 {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_50] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~7 ~-1 ~-1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_50] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~7 ~-1 ~ {auto:1,Command:"/execute @e[type=Pig,name=Meteor_50] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_50\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~6 ~-1 ~ {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~5 ~-1 ~ {auto:1,Command:/execute @e[type=Arrow,name=explode_40] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~4 ~-1 ~ {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:40}}},{id:MinecartCommandBlock,Command:blockdata ~3 ~-1 ~ {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_40] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~3 ~-1 ~1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_40] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~4 ~-1 ~1 {auto:1,Command:"/execute @e[type=Pig,name=Meteor_40] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_40\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~5 ~-1 ~1 {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~6 ~-1 ~1 {auto:1,Command:/execute @e[type=Arrow,name=explode_30] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~7 ~-1 ~1 {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:30}}},{id:MinecartCommandBlock,Command:blockdata ~7 ~-2 ~1 {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_30] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~6 ~-2 ~1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_30] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~5 ~-2 ~1 {auto:1,Command:"/execute @e[type=Pig,name=Meteor_30] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_30\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~4 ~-2 ~1 {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~3 ~-2 ~1 {auto:1,Command:/execute @e[type=Arrow,name=explode_20] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~3 ~-2 ~ {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:20}}},{id:MinecartCommandBlock,Command:blockdata ~4 ~-2 ~ {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_20] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~5 ~-2 ~ {auto:1,Command:/execute @e[type=Pig,name=Meteor_20] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~6 ~-2 ~ {auto:1,Command:"/execute @e[type=Pig,name=Meteor_20] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_20\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:blockdata ~7 ~-2 ~ {auto:1,Command:/kill @e[type=Arrow,score_meteor_min=1]}},{id:MinecartCommandBlock,Command:blockdata ~7 ~-2 ~-1 {auto:1,Command:/execute @e[type=Arrow,name=explode_10] ~ ~ ~ particle explode ~ ~ ~ 1 1 1 0 500}},{id:MinecartCommandBlock,Command:blockdata ~6 ~-2 ~-1 {auto:1,Command:/execute @e[type=Arrow,score_meteor_min=1,score_meteor=1] ~ ~ ~ summon Fireball ~ ~-2 ~ {Motion:[0.0,-1.0,0.0],direction:[0.0,-1.0,0.0],ExplosionPower:10}}},{id:MinecartCommandBlock,Command:blockdata ~5 ~-2 ~-1 {auto:1,Command:/scoreboard players add @e[type=Arrow,name=explode_10] meteor 1 {inGround:1b}}},{id:MinecartCommandBlock,Command:blockdata ~4 ~-2 ~-1 {auto:1,Command:/execute @e[type=Pig,name=Meteor_10] ~ ~ ~ kill @e[type=Pig,r=0]}},{id:MinecartCommandBlock,Command:blockdata ~3 ~-2 ~-1 {auto:1,Command:"/execute @e[type=Pig,name=Meteor_10] ~ ~ ~ summon Arrow ~-20 ~100 ~ {CustomName:\\\"explode_10\\\",Motion:[0.39,0.0,0.0],pickup:0}"}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 0 {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}