Hardcore OneCommand Version 1.0

/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 ~-1 ~7 ~-1 ~1 stained_hardened_clay 14 hollow"},{id:MinecartCommandBlock,Command:"fill ~2 ~-2 ~-1 ~7 ~-2 ~1 stained_glass 4 replace stained_hardened_clay"},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~ repeating_command_block 5 replace {auto:1,Command:"execute @e[type=Chicken,r=50] ~ ~ ~ summon Witch ~ ~ ~"}},{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"R;execute @e[type=Cow,r=50] ~ ~ ~ summon Creeper ~ ~ ~"}},{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~ repeating_command_block 5 replace {auto:1,Command:"execute @e[type=Villager,r=50] ~ ~ ~ summon Zombie ~ ~ ~"}},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ repeating_command_block 5 replace {auto:1,Command:"execute @e[type=Pig,r=50] ~ ~ ~ summon PigZombie ~ ~ ~"}},{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]}]}]}]}