Throw a brewing stand on the ground. Click above it.
Cmd:
/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 troll dummy,Riding:{id:MinecartCommandBlock,Command:/scoreboard objectives add brew dummy,Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~-1 ~-1 {Command:fill ~ ~ ~1 ~5 ~4 ~1 stone},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~-1 ~1 {Command:fill ~ ~ ~-1 ~5 ~4 ~-1 redstone_block},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~-1 ~-1 {Command:/scoreboard players set @e[type=Item] brew 1 {OnGround:1b,Item:{id:"minecraft:brewing_stand"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~-1 ~1 {Command:/execute @e[type=Item,score_brew_min=1] ~ ~ ~ summon ItemFrame ~ ~ ~ {CustomName:SpawnBrew}},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~-1 ~-1 {Command:/execute @e[type=Item,score_brew_min=1] ~ ~ ~ setblock ~ ~ ~ brewing_stand},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~-1 ~1 {Command:kill @e[type=Item,score_brew_min=1] },Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~-1 ~-1 {Command:/execute @e[type=ItemFrame,name=SpawnBrew] ~ ~ ~ /summon Villager ~ ~-.12 ~0.469 {CustomName:"Brewing",Profession:0,Offers:{Recipes:[{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:16,Count:1},buyB:{id:deadbush,Count:1},sell:{id:potion,Damage:8204,Count:1,tag:{CustomPotionEffects:[{Id:20,Amplifier:0,Duration:100}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:8204,Count:1,tag:{CustomPotionEffects:[{Id:20,Amplifier:0,Duration:100}]}},buyB:{id:glowstone_dust,Count:1},sell:{id:potion,Damage:8204,Count:1,tag:{CustomPotionEffects:[{Id:20,Amplifier:0,Duration:400}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:8204,Count:1,tag:{CustomPotionEffects:[{Id:20,Amplifier:0,Duration:400}]}},buyB:{id:gunpowder,Count:1},sell:{id:potion,Damage:16396,Count:1,tag:{CustomPotionEffects:[{Id:20,Amplifier:1,Duration:300}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:16,Count:1},buyB:{id:iron_ingot,Count:4},sell:{id:potion,Damage:8203,Count:1,tag:{HideFlags:31,CustomPotionEffects:[{Id:10,Amplifier:10,Duration:20},{Id:21,Amplifier:4,Duration:900}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:16,Count:1},buyB:{id:golden_apple,Damage:1,Count:1},sell:{id:potion,Damage:8197,Count:1,tag:{display:{Lore:[Permanently Boosts your health]},CustomPotionEffects:[{Id:10,Amplifier:10,Duration:20,ShowParticles:0b},{Id:21,Amplifier:4,Duration:200000000,ShowParticles:0b}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:16,Count:1},buyB:{id:dye,Count:1},sell:{id:potion,Damage:8202,Count:1,tag:{CustomPotionEffects:[{Id:15,Amplifier:0,Duration:300}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:8202,Count:1,tag:{CustomPotionEffects:[{Id:15,Amplifier:0,Duration:300}]}},buyB:{id:gunpowder,Count:1},sell:{id:potion,Damage:16394,Count:1,tag:{CustomPotionEffects:[{Id:15,Amplifier:0,Duration:600}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:16,Count:1},buyB:{id:rotten_flesh,Count:1},sell:{id:potion,Damage:8196,Count:1,tag:{CustomPotionEffects:[{Id:17,Amplifier:3,Duration:900}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:8196,Count:1,tag:{CustomPotionEffects:[{Id:17,Amplifier:3,Duration:900}]}},buyB:{id:gunpowder,Count:1},sell:{id:potion,Damage:16420,Count:1,tag:{CustomPotionEffects:[{Id:17,Amplifier:3,Duration:600}]}}},{rewardExp:0b,maxUses:2147483647,uses:0,buy:{id:potion,Damage:16,Count:1},buyB:{id:tnt,Count:1},sell:{id:potion,Damage:16407,Count:1,tag:{display:{Name:Troll Potion},CustomPotionEffects:[{Id:12,Amplifier:10,Duration:200}]}}}]},PersistenceRequired:1,NoAI:1,Silent:1}},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~-1 ~1 {Command:/execute @e[type=Villager,name=BrewStand] ~ ~ ~ particle smoke ~ ~.7 ~ 0 .1 0 0 3},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~-1 ~-1 {Command:kill @e[type=ItemFrame,name=SpawnBrew]},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~-1 ~1 {Command:/execute @e[type=Villager,name=BrewStand] ~ ~ ~ particle smoke ~ ~.7 ~ 0 .1 0 0 3},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~-1 ~-1 {Command:/scoreboard players set @a[score_brew_min=3600] brew 0},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~-1 ~1 {Command:scoreboard players add @a[score_brew_min=1] brew 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~ ~-1 {Command:/scoreboard players set @a brew 1 {ActiveEffects:[0:{Amplifier:10b,Id:12b}]}},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~ ~1 {Command:/effect @a[score_brew_min=1] 12 0},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~ ~-1 {Command:/scoreboard players set @a[score_troll_min=1] troll 0},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~ ~1 {Command:/scoreboard players set @a[score_brew_min=1] troll 1 {SelectedItem:{id:"minecraft:diamond_pickaxe"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~ ~-1 {Command:give @a[score_troll_min=1,score_troll=1] diamond 3},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~ ~1 {Command:/clear @a[score_troll_min=1,score_troll=1] diamond_pickaxe 0 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~ ~-1 {Command:/scoreboard players set @a[score_brew_min=1] troll 2 {SelectedItem:{id:"minecraft:golden_pickaxe"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~ ~1 {Command:give @a[score_troll_min=2,score_troll=2] gold_ingot 3},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~ ~-1 {Command:/clear @a[score_troll_min=2,score_troll=2] golden_pickaxe 0 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~ ~1 {Command:/scoreboard players set @a[score_brew_min=1] troll 3 {SelectedItem:{id:"minecraft:iron_pickaxe"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~ ~-1 {Command:give @a[score_troll_min=3,score_troll=3] iron_ingot 3},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~ ~1 {Command:/clear @a[score_troll_min=3,score_troll=3] iron_pickaxe 0 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~1 ~-1 {Command:/scoreboard players set @a[score_brew_min=1] troll 4 {SelectedItem:{id:"minecraft:stone_pickaxe"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~1 ~1 {Command:give @a[score_troll_min=4,score_troll=4] cobblestone 3},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~1 ~-1 {Command:/clear @a[score_troll_min=4,score_troll=4] stone_pickaxe 0 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~1 ~1 {Command:/scoreboard players set @a[score_brew_min=1] troll 5 {SelectedItem:{id:"minecraft:wooden_pickaxe"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~1 ~-1 {Command:give @a[score_troll_min=5,score_troll=5] planks 3 5},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~1 ~1 {Command:/clear @a[score_troll_min=5,score_troll=5] wooden_pickaxe 0 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~1 ~-1 {Command:/give @a[score_troll_min=1,score_troll=5] stick 2},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~1 ~1 {Command:/scoreboard players set @a[score_brew_min=1] troll 6 {SelectedItem:{id:"minecraft:crafting_table"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~1 ~-1 {Command:/clear @a[score_troll_min=6,score_troll=6] crafting_table 0 1},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~1 ~1 {Command:give @a[score_troll_min=6,score_troll=6] planks 4},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~1 ~-1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ fill ~4 ~4 ~4 ~-4 ~-4 ~-4 wheat 0 replace wheat},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~1 ~1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ fill ~4 ~4 ~4 ~-4 ~-4 ~-4 carrots 0 replace carrots},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~2 ~-1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ fill ~4 ~4 ~4 ~-4 ~-4 ~-4 potatoes 0 replace potatoes},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~2 ~1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ fill ~4 ~4 ~4 ~-4 ~-4 ~-4 brown_mushroom 0 replace yellow_flower},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~2 ~-1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ fill ~4 ~4 ~4 ~-4 ~-4 ~-4 red_mushroom 0 replace red_flower},Riding:{id:MinecartCommandBlock,Command:blockdata ~4 ~2 ~1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ fill ~4 ~4 ~4 ~-4 ~-4 ~-4 water 0 replace ice},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~2 ~-1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ entitydata @e[type=Item,r=4] {Item:{Damage:0,id:"minecraft:sugar"}}},Riding:{id:MinecartCommandBlock,Command:blockdata ~5 ~2 ~1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ entitydata @e[type=Villager,r=4,name=!Brewing] {Age:-100}},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~2 ~-1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ entitydata @e[type=Cow,r=5] {Age:-3}},Riding:{id:MinecartCommandBlock,Command:blockdata ~6 ~2 ~1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ entitydata @e[type=Pig,r=5] {Age:-3}},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~2 ~-1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ entitydata @e[type=Sheep,r=5] {Age:-3}},Riding:{id:MinecartCommandBlock,Command:blockdata ~7 ~2 ~1 {Command:/execute @a[score_brew_min=1] ~ ~ ~ entitydata @e[type=Chicken,r=5] {Age:-3}},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~2 ~-1 {Command:execute @e[type=Villager,name=Brewing] ~ ~ ~ detect ~ ~ ~ air 0 particle smoke ~ ~ ~ 0 0 0 .01 100},Riding:{id:MinecartCommandBlock,Command:blockdata ~8 ~2 ~1 {Command:/effect @e[type=Villager,name=Brewing] 14 100 10 true},Riding:{id:MinecartCommandBlock,Command:blockdata ~3 ~3 ~-1 {Command:execute @e[type=Villager,name=Brewing] ~ ~ ~ detect ~ ~ ~ air 0 kill @e[c=1]},Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-1 ~ redstone_block,Riding:{id:MinecartCommandBlock,Command:fill ~3 ~-1 ~-1 ~3 ~3 ~-1 command_block,Riding:{id:MinecartCommandBlock,Command:fill ~3 ~-1 ~-1 ~8 ~2 ~-1 command_block,Riding:{id:MinecartCommandBlock,Command:fill ~3 ~-1 ~1 ~8 ~3 ~1 command_block,Riding:{id:MinecartCommandBlock,Command:fill ~3 ~-1 ~1 ~8 ~2 ~1 command_block,Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~1 ~ wall_sign 4 replace {Text2:"{text:\\"Made by \\",color:black}",Text3:"{text:\\"Barf Head\\",color:dark_green,bold:true}"},Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~ ~ wall_sign 4 replace {Text1:"{text:\"\",clickEvent:{action:\\"run_command\\",value:\\"/scoreboard objectives remove troll\\"}}",Text2:"{text:\\"Destroy\\",color:dark_red,clickEvent:{action:\\"run_command\\",value:\\"/scoreboard objectives remove brew\\"},bold:true}",Text3:"{text:\\" Machine\\",color:dark_red,clickEvent:{action:\\"run_command\\",value:\\"kill @e[type=Villager,name=Brewing]\\"},bold:true}",Text4:"{text:\"\",clickEvent:{action:\\"run_command\\",value:\\"fill ~ ~-3 ~-2 ~9 ~4 ~2 air\\"}}"},Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-1 ~-2 ~9 ~3 ~2 iron_bars 0 replace coal_block 0,Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-2 ~-2 ~9 ~4 ~2 coal_block 0 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}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}