execute as @e[limit=1,type=villager,name=Danger,tag=!got] run data merge entity @s 

{VillagerData:{level:5,profession:"minecraft:weaponsmith",type:"minecraft:taiga"},CareerLevel:1,Offers:{Recipes:[{
buy:{id:"minecraft:feather",Count:6b},
buyB:{id:"minecraft:emerald",Count:1b},
sell:{id:"minecraft:potion",Count:1b,tag:{display:{Name:"{\"text\":\"Slowfall Potion\"}"},CustomPotionEffects:[{Id:28b,Amplifier:0b,Duration:600}],CustomPotionColor:12233896},HideFlags:1,Enchantments:[{id:"minecraft:lure",lvl:12}]}},{

buy:{id:"minecraft:ender_chest",Count:1b},
buyB:{id:"minecraft:red_mushroom",Count:64b},
sell:{id:"minecraft:written_book",Count:1b,tag:{HideFlags:1,Enchantments:[{id:"minecraft:unbreaking",lvl:10}],display:{Name:"{\"text\":\"Portable Mushroom House\",\"color\":\"red\"}",Lore:["\"Mushy!\""]},title:"",author:"",pages:["{\"text\":\"Portable Mushroom\",\"color\":\"red\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/trigger KyuMushy set 1\"},\"extra\":[{\"text\":\"\\n-------------------\",\"color\":\"gray\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/trigger KyuMushy set 1\"}},{\"text\":\"\\nClick to summon a\\ncute mushroom sprout, which quickly grows into an entire mushroom house! Once used, the book will disappear into the chest inside of the mushroom house, and once taken out, the house will vanish.\",\"color\":\"black\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/trigger KyuMushy set 1\"}}]}"]},HideFlags:1,Enchantments:[{id:"minecraft:lure",lvl:12}]}},{

buy:{id:"minecraft:diamond",Count:12b},
buyB:{id:"anvil",Count:13b},
sell:{id:"minecraft:golden_axe",Count:1b,tag:{splintersaxe:1b,display:{Name:"{\"text\":\"Axe of Splinters\",\"color\":\"red\"}",Lore:["\"An extremely powerful, but fragile axe. It will shatter after one use.\"","\"If a mob is killed with it, it will drop unique loot based on the mob that was killed.\""]},Damage:4000,Enchantments:[{id:"minecraft:sharpness",lvl:200},{id:"minecraft:looting",lvl:2}]}}},{

buy:{id:"minecraft:blaze_powder",Count:2b},
buyB:{id:"iron_block",Count:15b},
sell:{id:"minecraft:iron_axe",Count:1b,tag:{display:{Name:"{\"text\":\"Battleaxe\",\"color\":\"red\"}"},Enchantments:[{id:"minecraft:looting",lvl:1s},{id:"minecraft:unbreaking",lvl:1s}],AttributeModifiers:[{AttributeName:"generic.attack_speed",Name:"generic.attack_speed",Amount:-.75,Operation:1,UUID:[I;6969,6969,6969,1219],Slot:"mainhand"},{AttributeName:"generic.attack_damage",Name:"generic.attack_damage",Amount:13,Operation:0,UUID:[I;6969,6969,6969,1220],Slot:"mainhand"}]}}},{

buy:{id:"minecraft:wither_skeleton_skull",Count:1b},
buyB:{id:"redstone_block",Count:64b},
sell:{id:"minecraft:tipped_arrow",Count:10b,tag:{display:{Name:"{\"text\":\"Reaper's Arrow - Does not work on Dragon/Wither\",\"translate\":\"wig\",\"color\":\"dark_purple\"}"},HideFlags:1,Enchantments:[{id:"minecraft:luck_of_the_sea",lvl:1}],CustomPotionEffects:[{Id:20b,Amplifier:4b,Duration:32000}],CustomPotionColor:0}}},{

buy:{id:"minecraft:wither_skeleton_skull",Count:1b},
buyB:{id:"redstone_block",Count:64b},
sell:{id:"minecraft:bow",Count:1b,tag:{display:{Name:"{\"text\":\"This doesn't do anything special, but it has a purple name! \",\"translate\":\"wig\",\"color\":\"dark_purple\"}"},CustomPotionEffects:[{Id:20b,Amplifier:4b,Duration:32000}],CustomPotionColor:0}}}

]}}