Chunk Destroyer in Vanilla Minecraft!

for full tutorial visit:
https://www.youtube.com/watch?v=rNjNRr5C_-I

PrimedTnt command:

summon FallingSand ~ ~1 ~ {Time:1,Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:fill ~ ~1 ~ ~ ~-10 ~1 air},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:gamerule logAdminCommands false},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:gamerule commandBlockOutput false},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~1 ~-4 ~ wall_sign 4 0 {Text1:"Press button to",Text2:"start up the",Text3:"Chunk Destroyer!"}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~1 ~-4 ~ stone_button 2},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~-3 ~ quartz_block},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~-2 ~-1 command_block 0 0 {Command:spreadplayers ~ ~ 0 20 false @e[type=PrimedTnt,name=Destroyer,r=2]}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~-1 ~1 command_block 0 0 {Command:summon PrimedTnt ~ ~0.5 ~-2 {Fuse:3,CustomName:"Destroyer"}}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~1 ~ command_block 0 0 {Command:setblock ~ ~-1 ~ redstone_block}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~ ~ command_block 0 0 {Command:setblock ~ ~1 ~ air}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:fill ~ ~1 ~1 ~ ~10 ~1 redstone_block}}}}}}}}}}}}}

MinecartTNT command:

summon FallingSand ~ ~1 ~ {Time:1,Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:fill ~ ~1 ~ ~ ~-14 ~1 air},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:gamerule logAdminCommands false},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:gamerule commandBlockOutput false},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:scoreboard objectives add destroyer dummy},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~ ~-9 ~-1 stone_button 2},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~ ~-7 ~-1 wall_sign 4 0 {Text1:"Press button to",Text2:"start up the",Text3:"Chunk Destroyer!"}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~1 ~-6 ~-1 command_block 0 0 {Command:fill ~ ~ ~ ~-1 ~-1 ~ air}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~1 ~-6 ~-1 command_block 0 0 {Command:setblock ~1 ~1 ~1 redstone_block}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~-4 ~-1 command_block 0 0 {Command:scoreboard players add @e[type=MinecartTNT,name=Destroyer] destroyer 1}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~3 ~-3 ~ command_block 0 0 {Command:tp @e[type=MinecartTNT,score_destroyer_min=3,score_destroyer=3] ~ ~5 ~}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~-2 ~1 command_block 0 0 {Command:summon MinecartTNT ~ ~0.5 ~-2 {CustomName:"Destroyer"}}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~1 ~-1 ~ command_block 0 0 {Command:spreadplayers ~ ~ 0 20 false @e[type=MinecartTNT,score_destroyer=1]}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~1 ~ command_block 0 0 {Command:setblock ~ ~-1 ~ redstone_block}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:setblock ~2 ~ ~ command_block 0 0 {Command:setblock ~ ~1 ~ air}},Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:fill ~ ~1 ~1 ~ ~14 ~1 redstone_block}}}}}}}}}}}}}}}}}