Sol4r1s played this 80-card Yorion control deck on his stream.

Companion
1
Yorion, Sky Nomad
Planeswalkers (6)
4
Narset, Parter of Veils
2
Teferi, Master of Time
Creatures (7)
2
Archon of Sun's Grace
2
Yorion, Sky Nomad
3
Dream Trawler
Spells (14)
2
Aether Gust
2
Dovin's Veto
4
Absorb
1
Mystical Dispute
1
Thirst for Meaning
4
Shatter the Sky
Artifacts (3)
3
Glass Casket
Enchantments (15)
4
Omen of the Sea
4
The Birth of Meletis
3
Omen of the Sun
4
Elspeth Conquers Death
Lands (35)
2
Blast Zone
1
Castle Ardenvale
2
Castle Vantress
4
Fabled Passage
4
Hallowed Fountain
9
Island
7
Plains
2
Raugrin Triome
4
Temple of Enlightenment
Cards (80)
Sideboard (15)
1
Giant Killer
2
Sky Tether
2
Spectral Sailor
1
Aether Gust
2
Dovin's Veto
1
Glass Casket
1
Narset's Reversal
2
Mystical Dispute
1
Emiel the Blessed
1
Yorion, Sky Nomad
1
Commence the Endgame