Seeking Gems | 1 Command | Minecraft

/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:/scoreboard objectives add SeekingGemCraft dummy},{id:"MinecartCommandBlock",Command:/fill ~2 ~-2 ~-1 ~6 ~2 ~1 stained_hardened_clay 0 hollow},{id:"MinecartCommandBlock",Command:/fill ~2 ~-1 ~-1 ~6 ~1 ~1 stained_glass 8 replace stained_hardened_clay},{id:"MinecartCommandBlock",Command:/summon FallingSand ~3 ~-1 ~ {Block:"chain_command_block",Time:1,TileEntityData:{Command:/scoreboard players set @e[type=Item] SeekingGemCraft 1 {OnGround:1b,Item:{id:"minecraft:emerald",Count:2b}}},Data:1,Passengers:[{id:"FallingSand",Block:"chain_command_block",Data:5,Time:1,TileEntityData:{Command:/scoreboard players set @e[type=Item] SeekingGemCraft 2 {OnGround:1b,Item:{id:"minecraft:golden_carrot",Count:2b}}},Passengers:[{id:"FallingSand",Block:"stained_hardened_clay",Time:1}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~4 ~-1 ~ {Block:"chain_command_block",Time:1,TileEntityData:{Command:/scoreboard players tag @a add HoldSeekingGem {Inventory:[{tag:{SeekingGem:1b}}]}},Data:4,Passengers:[{id:"FallingSand",Block:"chain_command_block",Data:5,Time:1,TileEntityData:{Command:/execute @e[score_SeekingGemCraft_min=1,score_SeekingGemCraft=1] ~ ~ ~ execute @e[dx=0,score_SeekingGemCraft_min=2,score_SeekingGemCraft=2] ~ ~ ~ scoreboard players set @e[c=1,score_SeekingGemCraft_min=1] SeekingGemCraft 3},Passengers:[{id:"FallingSand",Block:"chain_command_block",Data:4,Time:1,TileEntityData:{Command:/execute @e[tag=HoldSeekingGem] ~ ~ ~ effect @e[r=10,rm=1] glowing 1 0 true}}]}]}},{id:"MinecartCommandBlock",Command:/summon FallingSand ~5 ~-1 ~ {Block:"repeating_command_block",Time:1,TileEntityData:{auto:1b,Command:/scoreboard players tag @a remove HoldSeekingGem},Data:4,Passengers:[{id:"FallingSand",Block:"chain_command_block",Data:1,Time:1,TileEntityData:{Command:/execute @e[score_SeekingGemCraft_min=3] ~ ~ ~ summon Item ~ ~ ~ {Motion:[0.0,0.3,0.0],Item:{Count:1b,id:"minecraft:dye",Damage:7s,tag:{SeekingGem:1b,display:{Name:"Seeking Gem",Lore:["Allows the holder","to see hidden mobs"]},ench:[]}}}},Passengers:[{id:"FallingSand",Block:"chain_command_block",Data:4,Time:1,TileEntityData:{Command:/execute @e[score_SeekingGemCraft_min=3] ~ ~ ~ kill @e[c=2,score_SeekingGemCraft_min=1]}}]}]}},{id:"MinecartCommandBlock",Command:setblock ~1 ~ ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"click here\\\",\\\"color\\\":\\\"dark_red\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/particle explode ~3 ~-.5 ~ 1.5 1.5 .5 .01 100 normal\\\"}}",Text2:"{\\\"text\\\":\\\"to remove\\\",\\\"color\\\":\\\"dark_red\\\"}",Text3:"{\\\"text\\\":\\\"this machine\\\",\\\"color\\\":\\\"dark_red\\\"}",Text4:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-2 ~-1 ~5 ~2 ~1 air\\\"}}"}},{id:"MinecartCommandBlock",Command:/setblock ~ ~1 ~ command_block 1 0 {auto:1b,Command:fill ~ ~ ~ ~ ~-2 ~ air}},{id:"MinecartCommandBlock",Command:kill @e[r=2,type=MinecartCommandBlock]}]}]}