Bant-ish (?) Humans - New to MTG, looking for help

Standard*

Awethor

Creature (24)

• 1x Archangel Avacyn  ^Flip
• 3x Heron's Grace Champion
• 4x Reflector Mage
• 1x Sigarda, Heron's Grace
• 2x Thalia, Heretic Cathar
• 2x Thalia's Lancers
• 4x Thalia's Lieutenant
• 3x Thraben Inspector
• 4x Tireless Tracker

Planeswalker (4)

• 2x Gideon, Ally of Zendikar
• 2x Tamiyo, Field Researcher

Land (22)

• 2x Botanical Sanctum
• 3x Canopy Vista
• 4x Forest
• 3x Fortified Village
• 2x Lumbering Falls
• 6x Plains
• 2x Prairie Stream

Enchantment (4)

• 2x Always Watching
• 2x Authority of the Consuls

Instant (2)

• 2x Skywhaler's Shot

Sorcery (4)

• 4x Declaration in Stone

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Sideboard

Creature (3)

• 2x Angel of Invention
• 1x Thalia, Heretic Cathar

Enchantment (2)

• 2x Quarantine Field

Instant (7)

• 3x Appetite for the Unnatural
• 2x Clip Wings
• 2x Repel the Abominable

Sorcery (3)

• 3x Fragmentize

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Let me start off by saying I'm somewhat new to MTG, especially deck-building, so I'm looking for any suggestions you can provide. Taking bits and pieces from other decks I've seen here on tappedout, I've created this amalgum, and to me it seems great! The assortment of great enchantments and sorceries available to white that fit this deck leave me clueless as to what end up being better so hopefully you all can provide some insight. Thanks for checking it out! :)

Edit: My main concerns as of now are whether or not I need to throw in 2 or so lands, whether or not I have the right amount of removal paired with this on mainboard, and whether or not it's worth throwing in a Nissa, Vital Force or not.

Date added	8 years
Last updated	8 years
Splash colors	U
Legality	This deck is not Standard legal.
Rarity (main - side)	6 - 4 Mythic Rares 35 - 1 Rares 4 - 2 Uncommons 5 - 8 Commons
Cards	60
Avg. CMC	2.92
Tokens	Clue, Emblem Gideon, Ally of Zendikar, Emblem Tamiyo, Field Researcher, Human Soldier 1/1 W, Knight Ally 2/2 W, Servo 1/1 C