SSM in Vanilla MC (Not Really Working)

/summon MinecartCommandBlock ~ ~1 ~ {Command:kill @e[type=MinecartCommandBlock,r=1],Riding:{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block,Riding:{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air},Riding:{id:MinecartCommandBlock,Command:"scoreboard objectives add NELFj_I dummy",Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ redstone_block,Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~-1 command_block 0 replace {Command:fill ~ ~ ~1 ~3 ~ ~1 stone},Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~1 command_block 0 replace {Command:fill ~ ~ ~-1 ~3 ~ ~-1 redstone_block},Riding:{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~-1 command_block 0 replace {Command:"scoreboard players set @e[type=Item] NELFj_I 1 {Item:{id:\\\"minecraft:diamond_block\\\"},OnGround:1b}"},Riding:{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~1 command_block 0 replace {Command:"scoreboard players set @e[type=Item] NELFj_I 2 {Item:{id:\\\"minecraft:emerald_block\\\"},OnGround:1b}"},Riding:{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~-1 command_block 0 replace {Command:"execute @e[score_NELFj_I_min=1,score_NELFj_I=1] ~ ~ ~ execute @e[r=0,score_NELFj_I_min=2,score_NELFj_I=2] ~ ~ ~ summon Item ~ ~ ~ {Item:{id:\\\"minecraft:iron_sword\\\",Count:1,tag:{display:{Name:\\\"Super Smash Mobs\\\"}}}}"},Riding:{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~1 command_block 0 replace {Command:"execute @e[score_NELFj_I_min=1,score_NELFj_I=1] ~ ~ ~ execute @e[r=0,score_NELFj_I_min=2,score_NELFj_I=2] ~ ~ ~ kill @e[type=Item,score_NELFj_I_min=1,score_NELFj_I=2,r=3]"},Riding:{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~-1 command_block 0 replace {Command:"/summon ArmorStand ~ ~ ~ {Invincible:1, NoBasePlate:1, ShowArms:0, CustomName:\\\"SSM\\\"}"},Riding:{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~1 command_block 0 replace {Command:"/execute @a ~ ~ ~ tp @e[type=ArmorStand,name=\\\"SSM\\\"] @a"},Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ wall_sign 4 replace {Text1:"{text:\\\"[Destroy]\\\",color:dark_red,clickEvent:{action:\\\"run_command\\\",value:\\\"/clear @a\\\"},bold:true,underlined:true}",Text4:"{text:\\\"\\\",clickEvent:{action:\\\"run_command\\\",value:\\\"fill ~ ~-1 ~-2 ~7 ~2 ~2 air\\\"}}"},Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-2 ~-2 ~7 ~-2 ~2 stained_glass 3 replace stained_hardened_clay 3,Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-3 ~-2 ~7 ~-1 ~2 stained_hardened_clay 3 hollow,Riding:{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false,Riding:{id:MinecartCommandBlock,Riding:{id:FallingSand,Block:activator_rail,Time:1,Riding:{id:FallingSand,Block:redstone_block,Time:1,Riding:{id:FallingSand,Block:stone,Time:1}}}}}}}}}}}}}}}}}}}}}