/summon FallingSand ~ ~8 ~ {Block:"redstone_block",Time:1,Riding:{id: FallingSand,Block:"command_block",Time:1,TileEntityData:{Command:/gamerule commandBlockOutput false},Riding:{id:FallingSand,Block:"redstone_block",Time:1,Riding:{id: FallingSand,Block:"command_block",Time:1,TileEntityData:{Command:/setblock ~ ~-4 ~2 command_block 1 0 {Command: /fill ~0 ~0 ~0 ~1 ~23 ~-2 air}},Riding:{id:FallingSand,Block:"redstone_block",Time:1,Riding:{id: FallingSand,Block:"command_block",Time:1,TileEntityData:{Command:/summon FallingSand ~0 ~9 ~1 {Block:"redstone_block",Time:1,Riding:{id:FallingSand,Block:"command_block",Time:1,TileEntityData:{Command:/setblock ~1 ~-10 ~0 redstone_block},Riding:{id:FallingSand,Block:"sand",Time:1,Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/setblock ~1 ~-8 ~1 redstone_block},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~25 ~57 ~-1 ~29 ~64 ~3 air},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~19 ~60 ~3 ~34 ~79 ~18 air},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~45 ~1 ~13 ~52 ~60 ~24 air},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~1 ~2 ~13 ~8 ~61 ~24 air},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~9 ~39 ~7 ~44 ~62 ~28 air},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~18 ~30 ~12 ~36 ~39 ~24 air},Riding:{id:FallingSand,Block:"chain_command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~30 ~-1 ~13 ~41 ~30 ~22 air},Riding:{id:FallingSand,Block:"command_block",Time:1,Data:1,TileEntityData:{Command:/fill ~12 ~0 ~13 ~23 ~31 ~22 air}}}}}}}}}}}}}},Riding:{id:FallingSand,Block:"air",Time:1}}}}}}}