"Spawncube - Map Updater - V1.1 - V1.2"

/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:"/tellraw @p [\"\",{\"text\":\"<Spawncube> Updating Spawners...\",\"color\":\"dark_green\",\"bold\":true}]"},{id:MinecartCommandBlock,Command:"/gamerule commandBlockOutput false"},{id:MinecartCommandBlock,Command:"/tellraw @p [\"\",{\"text\":\"<Spawncube> Spawners updated! Check the forum post to see what was added! (Click here!)\",\"color\":\"dark_green\",\"bold\":true,\"clickEvent\":{\"action\":\"open_url\",\"value\":\"http://www.minecraftforum.net/forums/mapping-and-modding/maps/2546353-spawncube-thegamingninja-snapshot-15w43a\"},\"hoverEvent\":{\"action\":\"show_text\",\"value\":{\"text\":\"\",\"extra\":[{\"text\":\"Click here to go to forum post!\"}]}}}]"},{id:MinecartCommandBlock,Command:setblock ~6 ~48 ~ chain_command_block 5 replace {auto:1,Command:"/fill ~ ~ ~ ~-3 ~ ~ air"}},{id:MinecartCommandBlock,Command:setblock ~5 ~48 ~ chain_command_block 5 replace {auto:1,Command:"/blockdata -81 73 -80 {SpawnCount:3,SpawnRange:3,RequiredPlayerRange:25,MaxNearbyEntities:10,Delay:300,MinSpawnDelay:325,MaxSpawnDelay:375,SpawnData:{id:\\\"PigZombie\\\",DeathLootTable:chests/nether_bridge},SpawnPotentials:[{Weight:6,Entity:{id:\\\"PigZombie\\\",DeathLootTable:chests/nether_bridge}},{Weight:4,Entity:{id:\\\"LavaSlime\\\",DeathLootTable:chests/nether_bridge}},{Weight:5,Entity:{id:\\\"Blaze\\\",DeathLootTable:chests/nether_bridge}}]}"}},{id:MinecartCommandBlock,Command:setblock ~4 ~48 ~ chain_command_block 5 replace {auto:1,Command:"/blockdata 93 70 5 {SpawnCount:1,SpawnRange:3,RequiredPlayerRange:50,MaxNearbyEntities:5,Delay:300,MinSpawnDelay:350,MaxSpawnDelay:375,SpawnData:{id:\\\"Cow\\\"},SpawnPotentials:[{Weight:3,Entity:{id:\\\"Cow\\\"}},{Weight:3,Entity:{id:\\\"EntityHorse\\\",DeathLootTable:enities/cow}},{Weight:3,Entity:{id:\\\"Sheep\\\"}},{Weight:5,Entity:{id:\\\"Chicken\\\"}}]}"}},{id:MinecartCommandBlock,Command:setblock ~3 ~48 ~ repeating_command_block 5 replace {auto:1,Command:"/blockdata 92 71 93 {SpawnCount:1,SpawnRange:3,RequiredPlayerRange:25,MaxNearbyEntities:4,Delay:250,MinSpawnDelay:300,MaxSpawnDelay:325,SpawnData:{id:\\\"Spider\\\",DeathLootTable:chests/spawn_bonus_chest},SpawnPotentials:[{Weight:6,Entity:{id:\\\"Spider\\\",DeathLootTable:chests/spawn_bonus_chest}},{Weight:5,Entity:{id:\\\"CaveSpider\\\",DeathLootTable:chests/spawn_bonus_chest}}]}"}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}