While Wizards improves on its new Digital-only MTG Alchemy format, its also encouraging that its providing resources to the Pauper format
And the relative generosity of Crown Zenith has cast a long shadow over the cards that have come out during and since

Explorers of the Deep EDH Precon Commander (1) Creature (37) Benthic Biomancer Coralhelm Commander Deeproot Elite Kiora's Follower Master of the Pearl Trident Merfolk Mistbinder Merfolk Skydiver Metallic Mimic Nicanzil, Current Conductor Stonybrook Banneret Thieving Skydiver Cold-Eyed Selkie Emperor Mihail II Evolution Sage Kopala, Warden of Waves Kumena, Tyrant of Orazca Merfolk Cave-Diver Merfolk Sovereign Merrow Reejerey Realmwalker Sage of Fables Singer of Swift Rivers Svyelun of Sea and Sky Thassa, God of the Sea Topography Tracker Vorel of the Hull Clade Deeproot Historian Herald of Secret Streams Seafloor Oracle Surgespanner Tributary Instructor Zegana, Utopian Speaker Mist Dancer Tatyova, Benthic Druid Prime Speaker Zegana Xolatoyac, the Smiling Flood Tishana, Voice of Thunder Instant (9) Rapid Hybridization Growth Spiral Ripples of Potential Beast Within Inspiring Call Quandrix Command Aetherize Ruinous Intrusion Commit / Memory Sorcery (6) Bygone Marvels Curse of the Swine Explore Kodama's Reach Ravenform Wave Goodbye Enchantment (6) Hardened Scales Simic Ascendancy Branching Evolution Deeproot Waters Kindred Discovery Reflections of Littjara Artifact (5) Sol Ring Arcane Signet Simic Signet Swiftfoot Boots Commander's Sphere Land (36) Alchemist's Refuge Command Tower Forest x7 Hinterland Harbor Island x13 Karn's Bastion Llanowar Reborn Mosswort Bridge Myriad Landscape Path of Ancestry Reliquary Tower Rogue's Passage Secluded Courtyard Simic Growth Chamber Temple of Mystery Temple of the False God Unclaimed Territory Vineglimmer Snarl Strengths and Weaknesses Explorers of the Deep, helmed by Hakbal of the Surging Soul, is a merfolk typal deck that focuses on flooding the board with merfolk, then exploring every turn for card advantage and to buff your critters

7 Wake Of Destruction Pretty much the complete opposite of Ruination, Wake is backbreaking against anyone playing a mono-colored deck