Yorion Jeskai Lukka
A Pioneer deck, by Rav104
7th place at a tournament in Magic Online on 2020-06-03

Maindeck:
1 Island
2 Mountain
3 Plains

Creatures
2 Agent of Treachery

Enchantments
2 Baffling End
2 Chained to the Rocks
2 Elspeth Conquers Death
4 Fires of Invention
4 Omen of the Sea
1 Omen of the Sun
1 Shark Typhoon
4 The Birth of Meletis

Legendary Enchantments
1 Oath of Chandra

Legendary Planeswalkers
2 Elspeth, Sun's Nemesis
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
3 Supreme Verdict

Lands
1 Castle Ardenvale
1 Castle Vantress
1 Clifftop Retreat
4 Fabled Passage
3 Glacial Fortress
3 Hallowed Fountain
4 Raugrin Triome
4 Sacred Foundry
2 Savai Triome
4 Steam Vents
2 Sulfur Falls

Sideboard:
2 Damping Sphere
2 Resolute Archangel
2 Void Winnower
2 Chained to the Rocks
4 Mystical Dispute
1 Yorion, Sky Nomad
1 Gideon of the Trials
1 Supreme Verdict