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Whirza
A Modern deck, by William Thompson
5th place at a tournament in Newington, Connecticut, United States on 2019-11-03
As reported at http://www.starcitygames.com

Maindeck:

Artifacts
1 Chromatic Star
1 Damping Sphere
1 Ensnaring Bridge
1 Ichor Wellspring
4 Mishra's Bauble
1 Pentad Prism
1 Pithing Needle
2 Sword of the Meek
4 Thopter Foundry
1 Time Sieve

Creatures
3 Gilded Goose
3 Goblin Engineer

Instants
3 Whir of Invention

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Legendary Creatures
4 Urza, Lord High Artificer

Legendary Planeswalkers
2 Oko, Thief of Crowns (Banned in Modern)

Snow Artifacts
4 Arcum's Astrolabe (Banned in Modern)

Basic Snow Lands
1 Snow-Covered Forest
4 Snow-Covered Island
1 Snow-Covered Mountain
1 Snow-Covered Swamp

Lands
1 Breeding Pool
2 Misty Rainforest
4 Polluted Delta
2 Prismatic Vista
2 Scalding Tarn
1 Steam Vents
1 Watery Grave

Sideboard:
1 Grafdigger's Cage
2 Assassin's Trophy
3 Galvanic Blast
2 Ashiok, Dream Render
2 Oko, Thief of Crowns (Banned in Modern)
2 Tezzeret, Agent of Bolas
2 Collective Brutality
1 Dead of Winter