Phil Gallager 5-0'd with a rather interesting variant of an Urza Stompy deck

Video of the run

Decklist:

2 Ancient Tomb
2 City of Traitors
4 Seat of the Synod
9 Snow-Covered Island

3 Lion's Eye Diamond
4 Lotus Petal
4 Mishra's Bauble
4 Urza's Bauble
4 Mox Opal

4 Emry, Lurker of the Loch
4 Narset, Parter of Veils
4 Urza, Lord High Artificer
4 Karn, the Great Creator

4 Chalice of the Void
4 Echo of Eons

Sideboard:
2 Mystical Dispute
2 Flusterstorm
2 Defense Grid
1 Lion's Eye Diamond
1 Walking Ballista
1 Witchbane Orb
1 Mystic Forge
1 Liquimetal Coating
1 Ensnaring Bridge
1 Mycosynth Lattice
1 Wurmcoil Engine
1 Tormod's Crypt