Simic Aggro
A Pioneer deck, by Andrew Karpovck
3rd place at a tournament in Orlando, Florida, United States on 2019-12-01
As reported at http://www.starcitygames.com

Maindeck:

Artifacts
1 Aethersphere Harvester

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

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

Legendary Artifacts
2 Heart of Kiran

Legendary Creatures
3 Questing Beast
2 Rhonas the Indomitable
1 Yorvo, Lord of Garenbrig

Legendary Planeswalkers
1 Kiora, Behemoth Beckoner
3 Oko, Thief of Crowns (Banned in Pioneer)
2 Vivien, Arkbow Ranger

Basic Lands
5 Forest

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

Sideboard:
1 Aethersphere Harvester
1 Lifecrafter's Bestiary
1 Sorcerous Spyglass
1 Reclamation Sage
2 Scavenging Ooze
2 Vine Mare
1 Aether Gust
3 Disdainful Stroke
1 Return to Nature
2 Entrancing Melody