Disintegrating World One Click

summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Passengers:[{id:FallingSand,Block:activator_rail,Time:1,Passengers:[{id:MinecartCommandBlock,Command:/scoreboard objectives add dW_timer dummy},{id:MinecartCommandBlock,Command:"/summon ArmorStand ~ ~5 ~ {NoGravity:1b,Invisible:1b,PersistenceRequired:1b,CustomName:\"destroyBlockUnder\"}"},{id:MinecartCommandBlock,Command:"/summon ArmorStand ~ ~5 ~ {NoGravity:1b,Invisible:1b,PersistenceRequired:1b,CustomName:\"dW_timer_tracker\"}"},{id:MinecartCommandBlock,Command:/scoreboard players set @e[name=dW_timer_tracker] dW_timer 400},{id:MinecartCommandBlock,Command:"/title @a title [\"\",{\"text\":\"Disentigrating World\",\"color\":\"yellow\",\"bold\":true}]"},{id:MinecartCommandBlock,Command:"/title @a subtitle [\"\",{\"text\":\"is now active\",\"color\":\"gray\",\"italic\":true}]"},{id:MinecartCommandBlock,Command:"/tellraw @a [\"\",{\"text\":\"[ 180,000 ticks elapsed / 2.5 hours ]\",\"color\":\"aqua\",\"italic\":true}]"},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ minecraft:repeating_command_block 3 _ {auto:1,TrackOutput:0b,Command:/scoreboard players remove @e[name=dW_timer_tracker] dW_timer 1}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~1 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/scoreboard players set @e[name=dW_timer_tracker,score_dW_timer=0] timer 200}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~2 minecraft:chain_command_block 11 _ {auto:1,TrackOutput:0b,Command:/execute @a ~ ~ ~ /spreadplayers ~ ~ 3 50 false @e[name=destroyBlockUnder]}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~3 minecraft:chain_command_block 11 _ {auto:1,TrackOutput:0b,Command:execute @e[type=ArmorStand,tag=function,name=destroyBlock] ~ ~ ~ blockdata ~ ~-1 ~ {auto:1} }},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~4 minecraft:command_block 3 _ {auto:0,TrackOutput:0b,Command:blockdata ~ ~ ~ {auto:0}}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~5 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ grass -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~6 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ log -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~7 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ log2 -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~8 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ stone -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~9 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ cobblestone -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~10 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ dirt -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~11 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ leaves -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~12 minecraft:chain_command_block 3 _ {auto:1,TrackOutput:0b,Command:/execute @e[name=destroyBlockUnder] ~ ~ ~ detect ~ ~-1 ~ leaves2 -1 /setblock ~ ~-1 ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~ ~1 ~ command_block 0 _ {auto:1b,Command:fill ~ ~-3 ~ ~ ~ ~ air}},{id:MinecartCommandBlock,Command:summon ArmorStand ~1 ~-1 ~4 {CustomName:destroyBlock,CustomNameVisible:1,Tags:[function]}},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}