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/summon FallingSand ~ ~1 ~ {Time:1,Block:stone_button,Motion:[0.0,0.5,0.0],Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:/scoreboard objectives add Sneak stat.sneakTime},Motion:[0.0,0.5,0.0],Riding:{id:FallingSand,Time:1,Block:repeating_command_block,TileEntityData:{conditionMet:1b,auto:1b,Command:/execute @a[score_Sneak_min=1] ~ ~ ~ testforblock ~ ~-1 ~ dispenser 1 {CustomName:"Advanced Crafting Table",Items:[0:{Slot:0b,id:"minecraft:blaze_rod",Count:1b,Damage:0s},1:{Slot:1b,id:"minecraft:nether_brick",Count:1b,Damage:0s},2:{Slot:2b,id:"minecraft:blaze_rod",Count:1b,Damage:0s},3:{Slot:3b,id:"minecraft:nether_brick",Count:1b,Damage:0s},4:{Slot:4b,id:"minecraft:nether_star",Count:1b,Damage:0s},5:{Slot:5b,id:"minecraft:nether_brick",Count:1b,Damage:0s},6:{Slot:6b,id:"minecraft:blaze_rod",Count:1b,Damage:0s},7:{Slot:7b,id:"minecraft:nether_brick",Count:1b,Damage:0s},8:{Slot:8b,id:"minecraft:blaze_rod",Count:1b,Damage:0s}]}},Motion:[0.0,0.5,0.0],Riding:{id:FallingSand,Time:1,Block:chain_command_block,TileEntityData:{conditionMet:0b,Command:/execute @a[score_Sneak_min=1] ~ ~ ~ /blockdata ~ ~-1 ~ {CustomName:"Advanced Crafting Table",Items:[0:{Slot:4b,id:"minecraft:diamond_sword",Count:1b,tag:{ench:[0:{lvl:10,id:16}],HideFlags:1,display:{Name:"Nether Sword"}},Damage:0s}]}},Motion:[0.0,0.5,0.0],Riding:{id:FallingSand,Time:1,Block:chain_command_block,TileEntityData:{Command:/scoreboard players set @a Sneak 0},Motion:[0.0,1.0,0.0]}}}}}