Minecraft Forums

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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 ~6 ~-1 ~1 stained_hardened_clay 2 hollow},{id:commandblock_minecart,Command:fill ~2 ~-2 ~-1 ~6 ~-2 ~1 stained_glass 4 0 stained_hardened_clay},{id:commandblock_minecart,Command:setblock ~1 ~-2 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"summon tnt ~ ~ ~\\\"}}",Text2:"{\\\"text\\\":\\\"Destroy\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"summon tnt ~ ~ ~\\\"}}",Text3:"{\\\"text\\\":\\\"Machine\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"summon sand ~ ~5 ~\\\"}}",Text4:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-1 ~-1 ~5 ~1 ~1 air\\\"}}"}},{id:commandblock_minecart,Command:summon armor_stand ~3 ~-2 ~ {CustomName:TogAct,Marker:1,NoGravity:1,Invisible:1}},{id:commandblock_minecart,Command:scoreboard objectives add YuAaUy_A dummy},{id:commandblock_minecart,Command:fill ~3 ~-2 ~ ~5 ~-2 ~ chain_command_block 5},{id:commandblock_minecart,Command:setblock ~3 ~-2 ~ repeating_command_block 5},{id:commandblock_minecart,Command:blockdata ~5 ~-2 ~ {auto:1,Command:summon skeleton ~ ~5 ~}},{id:commandblock_minecart,Command:blockdata ~4 ~-2 ~ {auto:1,Command:summon zombie ~ ~5 ~}},{id:commandblock_minecart,Command:blockdata ~3 ~-2 ~ {auto:1,Command:say <Zombie> BRAINS}},{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]}]}]}]}

Very unoptimized, it just spawns zombies and skeletons until your game crashes from lack of memory. Severely affects gameplay and framerate. I do not recommend placing this in a world you play on.