/summon MinecartCommandBlock ~ ~1 ~ {Command:kill @e[type=MinecartCommandBlock,r=1],Riding:{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block,Riding:{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air},Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ redstone_block,Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~-1 command_block 0 replace {Command:fill ~ ~ ~1 ~2 ~ ~1 stone},Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~1 command_block 0 replace {Command:fill ~ ~ ~-1 ~2 ~ ~-1 redstone_block},Riding:{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~-1 command_block 0 replace {Command:"replaceitem entity @e[type=Zombie] slot.armor.head wooden_button"},Riding:{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~1 command_block 0 replace {Command:"replaceitem entity @e[type=Skeleton] slot.armor.head wooden_button"},Riding:{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~-1 command_block 0 replace {Command:"replaceitem entity @e[type=Villager] slot.armor.head skull 1 3 {display:{Name:\\\"Guardian\\\"},SkullOwner:{Id:\\\"2e9c0a67-92b3-4949-9be1-faf12318ee88\\\",Properties:{textures:[{Value:\\\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOTMyYzI0NTI0YzgyYWIzYjNlNTdjMjA1MmM1MzNmMTNkZDhjMGJlYjhiZGQwNjM2OWJiMjU1NGRhODZjMTIzIn19fQ==\\\"}]}}}"},Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~-1 ~ wall_sign 4 replace {Text1:"{text:\\\"\\\",clickEvent:{action:\\\"run_command\\\",value:\\\"/say hi @p nice to see you! @p\\\"}}",Text2:"{text:\\\"I don't burn \\\",color:red}",Text3:"{text:\\\"one command\\\",color:gold,bold:true,underlined:true}"},Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ wall_sign 4 replace {Text1:"{text:\\\"\\\",clickEvent:{action:\\\"run_command\\\",value:\\\"/say<OneCommand> Why Why WHY!!!\\\"}}",Text2:"{text:\\\"Destroy \\\",color:black}",Text4:"{text:\\\"\\\",clickEvent:{action:\\\"run_command\\\",value:\\\"fill ~ ~-1 ~-2 ~6 ~2 ~2 air\\\"}}"},Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-2 ~-2 ~6 ~-2 ~2 iron_bars  replace end_stone 0,Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-3 ~-2 ~6 ~-1 ~2 end_stone 0 hollow,Riding:{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false,Riding:{id:MinecartCommandBlock,Riding:{id:FallingSand,Block:activator_rail,Time:1,Riding:{id:FallingSand,Block:redstone_block,Time:1,Riding:{id:FallingSand,Block:stone,Time:1}}}}}}}}}}}}}}}}}}