Simic Aggro
A Pioneer deck, by Lee Steht
5th place at a tournament in Orlando, Florida, United States on 2019-12-01
As reported at http://www.starcitygames.com

Maindeck:

Artifacts
3 Smuggler's Copter (Banned in Pioneer)

Creatures
4 Elvish Mystic
2 Gilded Goose
4 Llanowar Elves
4 Lovestruck Beast
4 Steel Leaf Champion
2 Wicked Wolf

Instants
4 Once Upon a Time (Banned in Pioneer)
4 Stubborn Denial

Legendary Artifacts
2 Heart of Kiran

Legendary Creatures
3 Questing Beast
1 Rhonas the Indomitable

Legendary Planeswalkers
4 Oko, Thief of Crowns (Banned in Pioneer)

Basic Lands
5 Forest

Lands
4 Botanical Sanctum
4 Breeding Pool
2 Hashep Oasis
1 Hinterland Harbor
3 Yavimaya Coast

Sideboard:
1 Lifecrafter's Bestiary
2 Brazen Borrower
2 Reclamation Sage
2 Scavenging Ooze
4 Aether Gust
2 Dispel
2 Mystical Dispute