Fast Leave Decay

summon FallingSand ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:FallingSand,Block:redstone_block,Time:1,Passengers:[{id:FallingSand,Block:activator_rail,Time:1,Passengers:[{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false},{id:MinecartCommandBlock,Command:setblock ~8 ~-1 ~1 chain_command_block 4 0 {auto:1,Command:scoreboard players tag @e[type=AreaEffectCloud,name=FLD_crusher] remove FLD_keep}},{id:MinecartCommandBlock,Command:setblock ~9 ~-1 ~1 chain_command_block 4 0 {auto:1,Command:kill @e[tag=!FLD_keep,type=AreaEffectCloud,name=FLD_crusher] }},{id:MinecartCommandBlock,Command:setblock ~9 ~-2 ~1 chain_command_block 1 0 {auto:1,Command:execute @e[tag=FLD_tag,type=AreaEffectCloud,name=FLD_crusher] ~ ~ ~ scoreboard players tag @e[type=AreaEffectCloud,tag=FLD_tag,c=-1,r=0] add FLD_keep }},{id:MinecartCommandBlock,Command:setblock ~8 ~-2 ~1 chain_command_block 5 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~ ~1 ~ leaves2 -1 summon AreaEffectCloud ~ ~1 ~ {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~1 chain_command_block 5 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~ ~ ~-1 leaves2 -1 summon AreaEffectCloud ~ ~ ~-1 {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~1 chain_command_block 5 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~ ~ ~1 leaves2 -1 summon AreaEffectCloud ~ ~ ~1 {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~1 chain_command_block 5 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~-1 ~ ~ leaves2 -1 summon AreaEffectCloud ~-1 ~ ~ {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~ chain_command_block 3 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~1 ~ ~ leaves2 -1 summon AreaEffectCloud ~1 ~ ~ {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~ chain_command_block 4 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~ ~1 ~ leaves -1 summon AreaEffectCloud ~ ~1 ~ {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~ chain_command_block 4 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~ ~ ~-1 leaves -1 summon AreaEffectCloud ~ ~ ~-1 {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~8 ~-2 ~ chain_command_block 4 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~ ~ ~1 leaves -1 summon AreaEffectCloud ~ ~ ~1 {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~9 ~-2 ~ chain_command_block 4 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~-1 ~ ~ leaves -1 summon AreaEffectCloud ~-1 ~ ~ {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~9 ~-2 ~-1 chain_command_block 3 0 {auto:1,Command:"execute @e[tag=FLD_tag] ~ ~ ~ detect ~1 ~ ~ leaves -1 summon AreaEffectCloud ~1 ~ ~ {Tags:[\\\"FLD_tag\\\"],CustomName:\\\"FLD_crusher\\\",Particle:\\\"take\\\",Radius:0.0001,Duration:4}"}},{id:MinecartCommandBlock,Command:setblock ~8 ~-2 ~-1 chain_command_block 5 0 {auto:1,Command:"scoreboard players tag @e[type=Item] add FLD_tag {Item:{id:\\\"minecraft:log2\\\"},Age:2s}"}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~-1 chain_command_block 5 0 {auto:1,Command:"scoreboard players tag @e[type=Item] add FLD_tag {Item:{id:\\\"minecraft:log\\\"},Age:2s}"}},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~-1 chain_command_block 5 0 {auto:1,Command:execute @e[name=FLD_crusher] ~ ~ ~ detect ~ ~ ~ leaves2 -1 setblock ~ ~ ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~-1 repeating_command_block 5 0 {auto:1,Command:execute @e[name=FLD_crusher] ~ ~ ~ detect ~ ~ ~ leaves -1 setblock ~ ~ ~ air 0 destroy}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 0 {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}