Mono-White Lifegain
A Standard deck, by Matthew Fry
2nd place at a tournament in Clarksville, Tennessee, United States on 2020-01-25
As reported at http://www.starcitygames.com

Maindeck:

Creatures
4 Ajani's Pridemate (Not currently legal in Standard)
3 Giant Killer (Not currently legal in Standard)
4 Healer's Hawk (Not currently legal in Standard)

Enchantment Creatures
4 Alseid of Life's Bounty (Not currently legal in Standard)

Instants
2 Unbreakable Formation (Not currently legal in Standard)

Legendary Artifacts
2 Shadowspear (Not currently legal in Standard)

Legendary Creatures
3 Linden, the Steadfast Queen (Not currently legal in Standard)
3 Tomik, Distinguished Advokist (Not currently legal in Standard)

Legendary Enchantment Creatures
3 Daxos, Blessed by the Sun (Not currently legal in Standard)
3 Heliod, Sun-Crowned (Not currently legal in Standard)

Legendary Planeswalkers
3 Ajani, Strength of the Pride (Not currently legal in Standard)
3 Gideon Blackblade (Not currently legal in Standard)

Basic Lands
19 Plains

Lands
4 Castle Ardenvale (Not currently legal in Standard)

Sideboard:
2 Glass Casket (Not currently legal in Standard)
2 Apostle of Purifying Light (Not currently legal in Standard)
2 Hushbringer (Not currently legal in Standard)
2 Banishing Light (Not currently legal in Standard)
2 Dawn of Hope (Not currently legal in Standard)
2 Elspeth, Sun's Nemesis (Not currently legal in Standard)
1 Devout Decree (Not currently legal in Standard)
2 Revoke Existence (Not currently legal in Standard)