/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:/fill ~ ~0 ~1 ~ ~-14 ~1 redstone_block},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~ ~3 ~1 stone},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~ ~4 ~ command_block 0 replace {Command:fill ~ ~2 ~ ~ ~-18 ~1 air}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~3 ~-11 ~-1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[0.0,0.0,1.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~3 ~-10 ~1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[1.0,0.0,0.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~4 ~-9 ~-1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[0.0,0.0,-1.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~4 ~-8 ~1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[-1.0,0.0,0.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~5 ~-7 ~-1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[-1.0,0.0,-1.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~5 ~-6 ~1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[1.0,0.0,1.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~6 ~-5 ~-1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[-1.0,0.0,1.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~6 ~-4 ~1 command_block 0 replace {Command:summon PrimedTnt ~ ~10 ~ {Fuse:100,Motion:[1.0,0.0,-1.0]}}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:gamerule commandBlockOutput false},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:"fill ~2 ~-2 ~ ~6 ~-2 ~ redstone_block"},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:"setblock ~2 ~-1 ~-1 command_block 0 replace {Command:/fill ~ ~ ~1 ~5 ~ ~1 stone 0 replace redstone_block}"},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:"setblock ~2 ~ ~1 command_block 0 replace {Command:/fill ~ ~ ~-1 ~5 ~ ~-1 redstone_block 0 replace stone}"},Time:1,Riding:{id:"FallingSand",Block:stone,Time:1}}}}}}}}}}}}}}}}}