Simic Merfolk
A Modern deck, by Drakanar
1st place at a tournament in Magic Online on 2020-07-06

Maindeck:

Artifacts
4 Aether Vial

Creatures
4 Kumena's Speaker
4 Lord of Atlantis (Not currently legal in Modern)
4 Master of the Pearl Trident
4 Merfolk Mistbinder
4 Merfolk Trickster
4 Merrow Reejerey
4 Silvergill Adept

Enchantments
2 Spreading Seas

Instants
3 Dismember
3 Force of Negation

Basic Lands
4 Island

Lands
4 Botanical Sanctum
2 Breeding Pool
1 Cavern of Souls
2 Flooded Strand
3 Mutavault
4 Waterlogged Grove

Sideboard:
2 Chalice of the Void
2 Damping Sphere
3 Relic of Progenitus
2 Brazen Borrower
2 Tidebinder Mage
1 Spreading Seas
1 Force of Negation
2 Veil of Summer