en 1.8 /summon Mobs & Pets /summon WitherBoss ~0 ~1 ~0 {Equipment:[{Count:1,id:diamond_sword,tag:{Unbreakable:1,display:{Name:You may not getting this},ench:[{id:18,lvl:5},{id:20,lvl:2},{id:19,lvl:2},{id:21,lvl:3},{id:16,lvl:5},{id:17,lvl:5},{id:34,lvl:3}]}},{Count:1,id:diamond_boots,tag:{display:{Name:You may not getting this}}},{Count:1,id:diamond_leggings,tag:{display:{Name:You may not getting this}}},{Count:1,id:diamond_chestplate,tag:{Unbreakable:1,display:{Name:You may not getting this},ench:[{id:3,lvl:4},{id:1,lvl:4},{id:4,lvl:4},{id:0,lvl:4},{id:7,lvl:3},{id:34,lvl:3}]}},{Count:1,id:diamond_helmet,tag:{display:{Name:You may not getting this}}}],CustomName:The unbeatable boss,CustomNameVisible:1,Attributes:[{Name:generic.maxHealth,Base:999},{Name:generic.movementSpeed,Base:1.0},{Name:generic.attackDamage,Base:999},{Name:generic.followRange,Base:999},{Name:generic.knockbackResistance,Base:10}],DropChances:[0.1F,0.1F,0.1F,0.1F,0.1F],ActiveEffects:[{Id:12,Amplifier:1,Duration:999999},{Id:21,Amplifier:1,Duration:999999},{Id:7,Amplifier:1,Duration:999999},{Id:8,Amplifier:1,Duration:999999},{Id:1,Amplifier:1,Duration:999999}]}