Hunger Minus | Minecraft | 1 Click

/summon FallingSand ~ ~1 ~ {Block:"redstone_block",Time:3,Passengers:[{id:"FallingSand",Block:"activator_rail",Time:3,Passengers:[{id:"MinecartCommandBlock",Command:/gamerule commandBlockOutput false},{id:"MinecartCommandBlock",Command:setblock ~3 ~-1 ~ repeating_command_block 0 0 {auto:1b,Command:/effect @a[score_NHungerM=18] 23 1 0 true}},{id:"MinecartCommandBlock",Command:/fill ~4 ~-2 ~-1 ~2 ~-2 ~1 planks 2},{id:"MinecartCommandBlock",Command:/scoreboard objectives add NHungerM food},{id:"MinecartCommandBlock",Command:/setblock ~ ~1 ~ command_block 1 0 {auto:1b,Command:fill ~ ~ ~ ~ ~-2 ~ air}},{id:"MinecartCommandBlock",Command:kill @e[r=2,type=MinecartCommandBlock]}]}]}