One command Destroy's EVERY THING!!!!
Ok - the other day Spikedemon223 and I tried out this new command. It's a randomly generating stone structure. We've made a view, you can catch it on YouTube. Here is the full command.
summon falling_block ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:falling_block,Block:redstone_block,Time:1,Passengers:[{id:falling_block,Block:activator_rail,Time:1,Passengers:[{id:commandblock_minecart,Command:"gamerule commandBlockOutput false"},{id:commandblock_minecart,Command:"fill ~2 ~-3 ~-2 ~8 ~ ~2 stained_hardened_clay 2 hollow"},{id:commandblock_minecart,Command:"fill ~2 ~-2 ~-2 ~8 ~-1 ~2 stained_glass 2 0 stained_hardened_clay"},{id:commandblock_minecart,Command:"setblock ~1 ~-2 ~ wall_sign 4 0 {Text1:\"{\\\"text\\\":\\\"Destroy Machine \\\",\\\"color\\\":\\\"dark_red\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/say Thanks for Useing my command\\\"},\\\"bold\\\":true}\",Text2:\"{\\\"text\\\":\\\"\\\"}\",Text3:\"{\\\"text\\\":\\\"\\\"}\",Text4:\"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-1 ~-2 ~7 ~2 ~2 air\\\"}}\"}"},{id:commandblock_minecart,Command:"setblock ~1 ~-1 ~ wall_sign 4 0 {Text1:\"{\\\"text\\\":\\\"Made By\\\",\\\"bold\\\":true,\\\"underlined\\\":true}\",Text2:\"{\\\"text\\\":\\\"Spikedemon223\\\",\\\"bold\\\":true,\\\"underlined\\\":true}\",Text3:\"{\\\"text\\\":\\\"\\\"}\",Text4:\"{\\\"text\\\":\\\"\\\"}\"}"},{id:commandblock_minecart,Command:"fill ~3 ~-2 ~-1 ~7 ~-1 ~1 chain_command_block 5"},{id:commandblock_minecart,Command:"setblock ~3 ~-1 ~1 chain_command_block 2"},{id:commandblock_minecart,Command:"fill ~7 ~-1 ~1 ~4 ~-1 ~1 chain_command_block 4"},{id:commandblock_minecart,Command:"setblock ~7 ~-2 ~1 chain_command_block 1"},{id:commandblock_minecart,Command:"setblock ~3 ~-2 ~ chain_command_block 3"},{id:commandblock_minecart,Command:"fill ~7 ~-2 ~ ~4 ~-2 ~ chain_command_block 4"},{id:commandblock_minecart,Command:"setblock ~7 ~-2 ~-1 chain_command_block 3"},{id:commandblock_minecart,Command:"setblock ~3 ~-2 ~-1 repeating_command_block 5"},{id:commandblock_minecart,Command:"blockdata ~6 ~-1 ~ {auto:1,Command:\"/scoreboard objectives add HL1 dummy\"}"},{id:commandblock_minecart,Command:"blockdata ~5 ~-1 ~ {auto:1,Command:\"/scoreboard objectives add HL dummy\"}"},{id:commandblock_minecart,Command:"blockdata ~4 ~-1 ~ {auto:1,Command:\"/scoreboard players set @e[type=Item] HL 3 {OnGround:1b,Item:{id:\\\"minecraft:sand\\\",Count:1b}}\"}"},{id:commandblock_minecart,Command:"blockdata ~3 ~-1 ~ {auto:1,Command:\"/execute @e[type=Item,score_HL_min=1,score_HL=1] ~ ~ ~ execute @e[type=Item,score_HL_min=2,score_HL=2,r=1] ~ ~ ~ kill @e[type=Item,score_HL_min=1,score_HL=2,r=2]\"}"},{id:commandblock_minecart,Command:"blockdata ~3 ~-1 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL_min=1,score_HL=1] ~ ~ ~ execute @e[type=Item,score_HL_min=2,score_HL=2,r=1] ~ ~ ~ summon item ~ ~ ~ {CustomName:\\\"Heart\\\",CustomNameVisible:1,Motion:[0.0,.4,0.0],Item:{id:redstone,Damage:1,Count:1b,tag:{HideFlags:33,display:{Name:\\\"Heart's\\\"},ench:[{id:35,lvl:0}],Tag:HL1}}}\"}"},{id:commandblock_minecart,Command:"blockdata ~4 ~-1 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL_min=1,score_HL=1] ~ ~ ~ execute @e[type=Item,score_HL_min=2,score_HL=2,r=1] ~ ~ ~ playsound block.anvil.use master @a ~ ~ ~ 10 1\"}"},{id:commandblock_minecart,Command:"blockdata ~5 ~-1 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL_min=1,score_HL=1] ~ ~ ~ execute @e[type=Item,score_HL_min=2,score_HL=2,r=1] ~ ~ ~ particle fallingdust ~ ~.4 ~ .1 .1 .1 .1 30 force\"}"},{id:commandblock_minecart,Command:"blockdata ~6 ~-1 ~1 {auto:1,Command:\"/scoreboard players set @e[type=Item] HL 2 {OnGround:1b,Item:{id:\\\"minecraft:diamond\\\",Count:1b}}\"}"},{id:commandblock_minecart,Command:"blockdata ~7 ~-1 ~1 {auto:1,Command:\"/scoreboard players set @e[type=Item] HL 1 {OnGround:1b,Item:{id:\\\"minecraft:quartz\\\",Count:2b}}\"}"},{id:commandblock_minecart,Command:"blockdata ~7 ~-2 ~1 {auto:1,Command:\"/scoreboard players set @e[type=Item] HL1 3 {OnGround:1b,Item:{id:\\\"minecraft:sand\\\",Count:1b}}\"}"},{id:commandblock_minecart,Command:"blockdata ~6 ~-2 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL1_min=1,score_HL1=1] ~ ~ ~ execute @e[type=Item,score_HL1_min=2,score_HL1=2,r=1] ~ ~ ~ kill @e[type=Item,score_HL1_min=1,score_HL1=2,r=2]\"}"},{id:commandblock_minecart,Command:"blockdata ~5 ~-2 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL1_min=1,score_HL1=1] ~ ~ ~ execute @e[type=Item,score_HL1_min=2,score_HL1=2,r=1] ~ ~ ~ summon item ~ ~ ~ {CustomName:\\\"Heart\\\",CustomNameVisible:1,Motion:[0.0,.4,0.0],Item:{id:redstone,Damage:1,Count:1b,tag:{HideFlags:33,display:{Name:\\\"Heart'ss\\\"},ench:[{id:35,lvl:0}],Tag:HL1}}}\"}"},{id:commandblock_minecart,Command:"blockdata ~4 ~-2 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL1_min=1,score_HL1=1] ~ ~ ~ execute @e[type=Item,score_HL1_min=2,score_HL1=2,r=1] ~ ~ ~ playsound block.anvil.use master @a ~ ~ ~ 10 1\"}"},{id:commandblock_minecart,Command:"blockdata ~3 ~-2 ~1 {auto:1,Command:\"/execute @e[type=Item,score_HL1_min=1,score_HL1=1] ~ ~ ~ execute @e[type=Item,score_HL1_min=2,score_HL1=2,r=1] ~ ~ ~ particle fallingdust ~ ~.4 ~ .1 .1 .1 .1 30 force\"}"},{id:commandblock_minecart,Command:"blockdata ~3 ~-2 ~ {auto:1,Command:\"/scoreboard players set @e[type=Item] HL1 2 {OnGround:1b,Item:{id:\\\"minecraft:diamond\\\",Count:1b}}\"}"},{id:commandblock_minecart,Command:"blockdata ~4 ~-2 ~ {auto:1,Command:\"/scoreboard players set @e[type=Item] HL1 1 {OnGround:1b,Item:{id:\\\"minecraft:end_stone\\\",Count:2b}}\"}"},{id:commandblock_minecart,Command:"blockdata ~5 ~-2 ~ {auto:1,Command:\"/scoreboard players tag @a remove HL\"}"},{id:commandblock_minecart,Command:"blockdata ~6 ~-2 ~ {auto:1,Command:\"/execute @a[tag=HL] ~ ~ ~ /clear @a[tag=HL] minecraft:redstone 1 1\"}"},{id:commandblock_minecart,Command:"blockdata ~7 ~-2 ~ {auto:1,Command:\"/execute @a[tag=HL] ~ ~ ~ /effect @a[tag=HL] minecraft:health_boost 9999 4 true\"}"},{id:commandblock_minecart,Command:"blockdata ~7 ~-2 ~-1 {auto:1,Command:\"/scoreboard players tag @a add HL {Inventory:[{Slot:-106b,id:\\\"minecraft:redstone\\\",tag:{display:{Name:\\\"Heart's\\\"}}}]}\"}"},{id:commandblock_minecart,Command:"blockdata ~6 ~-2 ~-1 {auto:1,Command:\"/scoreboard players tag @a remove HL1\"}"},{id:commandblock_minecart,Command:"blockdata ~5 ~-2 ~-1 {auto:1,Command:\"/execute @a[tag=HL1] ~ ~ ~ /clear @a[tag=HL1] minecraft:redstone 1 1\"}"},{id:commandblock_minecart,Command:"blockdata ~4 ~-2 ~-1 {auto:1,Command:\"/execute @a[tag=HL1] ~ ~ ~ /effect @a[tag=HL1] minecraft:health_boost 9999 9 true\"}"},{id:commandblock_minecart,Command:"blockdata ~3 ~-2 ~-1 {auto:1,Command:\"/scoreboard players tag @a add HL1 {Inventory:[{Slot:-106b,id:\\\"minecraft:redstone\\\",tag:{display:{Name:\\\"Heart'ss\\\"}}}]}\"}"},{id:commandblock_minecart,Command:"setblock ~ ~ ~1 command_block 0 0 {Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"},{id:commandblock_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:commandblock_minecart,Command:"kill @e[type=commandblock_minecart,r=1]"}]}]}]}