Make an evoker with commands

I'm trying to make an evoker. I have enchanted a shield with a banner on it, but I cannot get the banner to work on the shield.
Here is the command I am currently using:

/give @p pillager_spawn_egg{EntityTag:
{id:"minecraft:evoker",CustomName:"\"Gandor\"",CustomNameVisible:1,NoGravity:1b,Health:9999,Attributes:[{Name:"generic.maxHealth",Base:9999},
{Name:"generic.knockbackResistance",Base:1f}],
HandItems:[{id:"minecraft:stick",tag:{display:{Name:'{"text":"Wizard wand"}',
Lore:['{"text":"Gandor\'s wand is said to be the key to unlimited Power"}']},
Enchantments:[{id:infinity,lvl:1}]},Count:1},{id:"minecraft:shield",
tag:{display:{Name:'{"text":"possessed shield"}',Lore:['{"text":"the shield knows who you are"}','{"text":""}','{"text":"                \\u263b"}','{"text":""}',
'{"text":"        Greetings child"}',
'{"text":"      come to kill me once "}',
'{"text":"             again?"}']},
Enchantments:[{id:unbreaking,lvl:3},{id:knockback,lvl:10},{id:mending,lvl:1}]},Count:1}],
BlockEntityTag:{Base:0,Patterns:[{Color:4,Pattern:"flo"}]},
HandDropChances:[2F,2F],ArmorDropChances:[2F,2F,2F,2F],
ArmorItems:[{id:"minecraft:clock",tag:{display:{Name:'{"text":"\\u262f The Gray Mage Clock \\u262f"}',
Lore:['{"text":"Only Time can teach you child "}','{"text":""}','{"text":""}',
'{"text":"h\\u0336\\u0304\\u0344a\\u0337\\u0358\\u0360\\u0315\\u0309h\\u0334\\u0344a\\u0334\\u0300\\u0344\\u0344\\u0358\\u0302\\u0343\\u0360h\\u0334\\u031a\\u033e\\u0311a\\u0337\\u0350\\u0305\\u0302\\u0303\\u031ah\\u0336\\u0309\\u0301\\u033ea\\u0336\\u0307\\u0305\\u033d\\u0309h\\u0334\\u0315\\u0325a\\u0334\\u034a\\u0351h\\u0336a\\u0337\\u0342\\u0355\\u032f"}']}},Count:1},{},{},{}],
ActiveEffects:[{Id:1,Amplifier:0,Duration:2147483647},{Id:10,Amplifier:0,Duration:2147483647}],
Tags:["Her Axe will take your soul"]}} [note this is for alore thing]