Hardened Scales
A Pioneer deck, by Paul Sirois
8th place at a tournament in Newington, Connecticut, United States on 2020-01-12
As reported at http://www.starcitygames.com

Maindeck:

Artifact Creatures
3 Hangarback Walker
3 Stonecoil Serpent
4 Walking Ballista (Banned in Pioneer)

Creatures
3 Elvish Mystic
3 Llanowar Elves
4 Voracious Hydra
4 Winding Constrictor

Enchantments
4 Hardened Scales

Legendary Creatures
2 Rishkar, Peema Renegade

Legendary Planeswalkers
3 Nissa, Voice of Zendikar
3 Vivien, Arkbow Ranger
2 Vraska, Golgari Queen

Basic Lands
6 Forest

Lands
4 Blooming Marsh
1 Castle Locthwain
2 Hashep Oasis
4 Llanowar Wastes
4 Overgrown Tomb

Legendary Lands
1 Nykthos, Shrine to Nyx

Sideboard:
2 Damping Sphere
3 Leyline of the Void
3 Assassin's Trophy
3 Fatal Push
1 Questing Beast
3 Thoughtseize