Simic Flash
A Standard deck, by Ninjor
0th place at a tournament on 2020-04-06

Maindeck:
5 Forest
7 Island

Creatures
4 Brazen Borrower (Not currently legal in Standard)
4 Brineborn Cutthroat (Not currently legal in Standard)
4 Frilled Mystic (Not currently legal in Standard)
4 Nightpack Ambusher (Not currently legal in Standard)
4 Spectral Sailor (Not currently legal in Standard)
2 Wildborn Preserver (Not currently legal in Standard)

Instants
1 Essence Capture (Not currently legal in Standard)
3 Mystical Dispute (Not currently legal in Standard)
1 Negate
4 Quench (Not currently legal in Standard)
4 Sinister Sabotage (Not currently legal in Standard)

Lands
4 Breeding Pool (Not currently legal in Standard)
2 Castle Vantress (Not currently legal in Standard)
3 Fabled Passage (Not currently legal in Standard)
4 Temple of Mystery (Not currently legal in Standard)

Sideboard:
4 Lovestruck Beast (Not currently legal in Standard)
3 Aether Gust (Not currently legal in Standard)
2 Essence Capture (Not currently legal in Standard)
1 Mystical Dispute (Not currently legal in Standard)
3 Negate
2 Return to Nature