C4's

summon falling_block ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:falling_block,Block:redstone_block,Time:1,Passengers:[{id:falling_block,Block:activator_rail,Time:1,Passengers:[{id:commandblock_minecart,Command:gamerule commandBlockOutput false},{id:commandblock_minecart,Command:fill ~2 ~-3 ~-1 ~11 ~-1 ~1 stained_hardened_clay 8 hollow},{id:commandblock_minecart,Command:fill ~2 ~-2 ~-1 ~11 ~-2 ~1 stained_glass 5 0 stained_hardened_clay},{id:commandblock_minecart,Command:scoreboard objectives add sa2 dummy},{id:commandblock_minecart,Command:"give @p minecraft:spawn_egg 1 93 {display:{Name:\"C4\"},ench:[{id:0,lvl:1}],EntityTag:{id:\"minecraft:chicken\"}}"},{id:commandblock_minecart,Command:"give @p minecraft:spawn_egg 1 93 {display:{Name:\"Detonate\"},ench:[{id:0,lvl:1}],EntityTag:{id:\"minecraft:chicken\"}}"},{id:commandblock_minecart,Command:setblock ~1 ~-2 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"\\\"}",Text2:"{\\\"text\\\":\\\"DESTROY\\\",\\\"color\\\":\\\"red\\\"}",Text3:"{\\\"text\\\":\\\"\\\"}",Text4:"{\\\"text\\\":\\\"\\\"}"}},{id:commandblock_minecart,Command:fill ~3 ~-2 ~ ~10 ~-2 ~ chain_command_block 5},{id:commandblock_minecart,Command:setblock ~10 ~-2 ~ chain_command_block 13},{id:commandblock_minecart,Command:setblock ~8 ~-2 ~ chain_command_block 13},{id:commandblock_minecart,Command:setblock ~6 ~-2 ~ chain_command_block 13},{id:commandblock_minecart,Command:setblock ~4 ~-2 ~ chain_command_block 13},{id:commandblock_minecart,Command:setblock ~3 ~-2 ~ repeating_command_block 5},{id:commandblock_minecart,Command:blockdata ~10 ~-2 ~ {auto:1,Command:kill @e[type=Chicken,name=Detonate]}},{id:commandblock_minecart,Command:blockdata ~9 ~-2 ~ {auto:1,Command:testfor @e[type=Chicken,name=Detonate]}},{id:commandblock_minecart,Command:blockdata ~8 ~-2 ~ {auto:1,Command:scoreboard players add @e[type=armor_stand,name=C4] sa2 1}},{id:commandblock_minecart,Command:blockdata ~7 ~-2 ~ {auto:1,Command:testfor @e[type=Chicken,name=Detonate]}},{id:commandblock_minecart,Command:blockdata ~6 ~-2 ~ {auto:1,Command:kill @e[type=Chicken,name=C4]}},{id:commandblock_minecart,Command:blockdata ~5 ~-2 ~ {auto:1,Command:testfor @e[type=Chicken,name=C4]}},{id:commandblock_minecart,Command:blockdata ~4 ~-2 ~ {auto:1,Command:"execute @e[type=Chicken,name=C4] ~ ~ ~ /summon armor_stand ~ ~1 ~ {CustomName:\\\"C4\\\",CustomNameVisible:1,Invisible:1}"}},{id:commandblock_minecart,Command:blockdata ~3 ~-2 ~ {auto:1,Command:testfor @e[type=Chicken,name=C4]}},{id:commandblock_minecart,Command:setblock ~ ~ ~1 command_block 0 0 {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:commandblock_minecart,Command:setblock ~ ~-1 ~1 redstone_block},{id:commandblock_minecart,Command:kill @e[type=commandblock_minecart,r=1]}]}]}]}