Elves
A Legacy deck, by BladeofIce
3rd place at a tournament in Magic Online on 2020-08-09

Maindeck:

Creatures
1 Allosaurus Shepherd
1 Archon of Valor's Reach
3 Birchlore Rangers
1 Collector Ouphe
1 Craterhoof Behemoth
4 Elvish Reclaimer
4 Elvish Visionary
3 Heritage Druid
4 Quirion Ranger
4 Wirewood Symbiote

Instants
3 Once Upon a Time

Sorceries
4 Glimpse of Nature
4 Green Sun's Zenith
3 Natural Order

Basic Snow Lands
2 Snow-Covered Forest

Lands
2 Bayou
1 Bojuka Bog
1 Cavern of Souls
2 Misty Rainforest
2 Verdant Catacombs
2 Windswept Heath
2 Wooded Foothills

Land Creatures
2 Dryad Arbor

Legendary Lands
4 Gaea's Cradle

Sideboard:
4 Leyline of the Void
3 Abrupt Decay
1 Progenitus
1 Cabal Therapy
4 Thoughtseize
1 Cabal Pit
1 Karakas