/give @p sheep_spawn_egg{EntityTag:{id:"minecraft:wither",CustomName:"\"totally not a wither spawn egg\"",CustomNameVisible:1,Glowing:1,NoGravity:1b,FallFlying:1,ArmorItems:[{},{},{id:"minecraft:elytra",Count:1},{}],Health:666,Attributes:[{Name:"generic.maxHealth",Base:666},{Name:"generic.followRange",Base:67},{Name:"generic.knockbackResistance",Base:0.66f},{Name:"generic.movementSpeed",Base:6.6f}],HandDropChances:[2F,2F],HandItems:[{id:"minecraft:diamond_block",tag:{display:{Name:'{"text":"Reward"}',Lore:['{"text":"You defeated the Satanic Wither! tTake this and craft it into diamonds! You earned it."}']}},Count:1},{}],ActiveEffects:[{Id:2,Amplifier:0,Duration:2147483647},{Id:4,Amplifier:0,Duration:2147483647},{Id:7,Amplifier:0,Duration:2147483647},{Id:9,Amplifier:0,Duration:2147483647},{Id:15,Amplifier:0,Duration:2147483647},{Id:17,Amplifier:0,Duration:2147483647},{Id:18,Amplifier:0,Duration:2147483647},{Id:19,Amplifier:0,Duration:2147483647},{Id:20,Amplifier:0,Duration:2147483647},{Id:27,Amplifier:0,Duration:2147483647},{Id:31,Amplifier:0,Duration:2147483647}],Tags:["Get hit, and you will suffer."]}}