Hardened Scales
A Pioneer deck, by Wade Lawson
4th place at a tournament in Knoxville, Tennessee, United States on 2020-01-12

Maindeck:

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

Creatures
3 Elvish Mystic
3 Llanowar Elves
2 Scavenging Ooze
4 Voracious Hydra
4 Winding Constrictor

Enchantments
4 Hardened Scales

Legendary Creatures
2 Rishkar, Peema Renegade

Legendary Planeswalkers
4 Nissa, Voice of Zendikar
4 Vivien, Arkbow Ranger

Basic Lands
7 Forest

Lands
4 Blooming Marsh
2 Hashep Oasis
4 Llanowar Wastes
4 Overgrown Tomb
1 Woodland Cemetery

Sideboard:
1 Scavenging Ooze
1 Tireless Tracker
2 Evolutionary Leap
2 Assassin's Trophy
4 Fatal Push
1 Questing Beast
4 Thoughtseize