Ad Nauseam
A Modern deck, by Tomoya Tsubouchi
5th place at a tournament in Kobe, Japan on 2017-05-27

Maindeck:

Artifacts
4 Lotus Bloom
4 Pentad Prism

Creatures
1 Laboratory Maniac
4 Simian Spirit Guide (Banned in Modern)

Enchantments
4 Phyrexian Unlife

Instants
4 Ad Nauseam
4 Angel's Grace
1 Lightning Storm
3 Pact of Negation
3 Spoils of the Vault

Sorceries
4 Serum Visions
4 Sleight of Hand

Basic Lands
1 Island
2 Plains

Lands
2 City of Brass
4 Darkslick Shores
3 Gemstone Mine (Not currently legal in Modern)
2 Seachrome Coast
4 Temple of Deceit
2 Temple of Enlightenment

Sideboard:
2 Grafdigger's Cage
1 Godhead of Awe
4 Leyline of Sanctity
1 Echoing Truth
2 Fatal Push
2 Hurkyl's Recall
1 Supreme Verdict
2 Thoughtseize