Summon small creatures that can't be blocked, draw new cards, fly under the radar until it's too late

Esper : White, Blue, Black

Whenever you attack, target attacking creature can't be blocked this turn. It connives. Then choose another attacking creature with lesser power. That creature gains double strike until end of turn. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)

Commander
Kamiz, Obscura Oculus

Artifacts
Arcane Signet
Bag of Holding
Commander's Sphere
Mask of Riddles
Mask of the Schemer
Quietus Spike
Sol Ring
Strionic Resonator
Swiftfoot Boots

Creatures
Aerial Extortionist
Archfiend of Ifnir
Archon of Coronation
Arvinox, the Mind Flail
Athreos, God of Passage
Chasm Skulker
Custodi Lich
Daxos of Meletis
Dragonlord Ojutai
Drana, Liberator of Malakir
Etrata, the Silencer
Faerie Vandal
Fallen Shinobi
Forgotten Creation
Gwafa Hazid, Profiteer
Identity Thief
Knights of Dol Amroth
Lat-Nam Adept
Ledger Shredder
Looter il-Kor
Luminarch Aspirant
Necroskitter
Queza, Augur of Agonies
Raffine, Scheming Seer
Shadowmage Infiltrator
Shakedown Heavy
Silent-Blade Oni
Thief of Sanity
Tivit, Seller of Secrets
Wrexial, the Risen Deep

Enchantments
Cathars' Crusade
Feast of Sanity
Kaya's Ghostform
Kismet
Leyline of the Void
Ossification
Security Bypass
Stab Wound
Staggering Insight
Wiretapping

Instants
Change of Plans
Lethal Scheme
Obscura Confluence
Revelation of Power
Siphon Insight
Swords to Plowshares
Utter End

Sorcery
Austere Command
Diabolic Tutor
Dusk // Dawn
Extract Brain
Impede Momentum
Stolen Identity
Writ of Return

Lands
Arcane Sanctum
Ash Barrens
Choked Estuary
Command Tower
Creeping Tar Pit
Esper Panorama
Exotic Orchard
Fetid Heath
Island x6
Obscura Storefront
Path of Ancestry
Plains x 5
Port Town
Prairie Stream
Rogue's Passage
Swamp x5
Skybridge Towers
Sunken Hollow
Temple of Silence
Thriving Heath
Thriving Isle
Thriving Moor
Waterfront District

Sideboard
Sen Triplets