ForMapBoss[MC1.9+]

/give @p spawn_egg 1 0 {EntityTag:{id:EntityHorse,Type:4,Tame:1,Passengers:[{id:Skeleton,CustomName:"Death Rider",CustomNameVisible:1,LeftHanded:0,Attributes:[{Name:"generic.maxHealth",Base:1000},{Name:"generic.movementSpeed",Base:2f}],HandItems:[{id:"minecraft:bow",tag:{display:{Name:"Убиватор 228",Lore:["ОЧЕНЬ ЖОПАРАЗДЕРАЕЕТ"]},ench:[{id:48,lvl:5}]},Count:1},{}],HandDropChances:[2F,0F],ArmorItems:[{tag:{display:{Name:"Найки",color:0},ench:[{id:2,lvl:4}]},Count:1,id:"minecraft:leather_boots"},{tag:{display:{Name:"Из березовой коры",Lore:["МАМА ШИЛА МНЕ ШТАНЫ"]}},Count:1,id:"minecraft:iron_leggings"},{Count:1,id:"minecraft:chainmail_chestplate"},{id:"minecraft:chainmail_helmet",Count:1}],ArmorDropChances:[2F,0.5F,0.5F,0.5F],ActiveEffects:[{Id:26,Amplifier:0,Duration:2147483647}]}]}}