Yorion Jeskai Lukka
A Pioneer deck, by Pupsta
2nd place at a tournament in Magic Online on 2020-05-15

Maindeck:

Creatures
2 Agent of Treachery

Enchantments
2 Baffling End
2 Elspeth Conquers Death
4 Fires of Invention
4 Omen of the Sea
3 Shark Typhoon
4 The Birth of Meletis

Legendary Enchantments
3 Oath of Chandra

Legendary Planeswalkers
3 Gideon of the Trials
4 Lukka, Coppercoat Outcast
4 Narset, Parter of Veils
4 Teferi, Time Raveler (Banned in Pioneer)

Sorceries
2 Deafening Clarion
4 Supreme Verdict

Basic Lands
1 Island
1 Mountain
3 Plains

Lands
1 Castle Ardenvale
1 Castle Vantress
2 Clifftop Retreat
2 Fabled Passage
2 Glacial Fortress
4 Hallowed Fountain
3 Irrigated Farmland
4 Raugrin Triome
3 Sacred Foundry
3 Steam Vents
3 Sulfur Falls
1 Temple of Enlightenment
1 Temple of Epiphany

Sideboard:
2 Resolute Archangel
2 Void Winnower
3 Rest in Peace
3 Mystical Dispute
1 Yorion, Sky Nomad
1 Gideon of the Trials
3 Teyo, the Shieldmage