There is an incredible breadth of different possible strategies, each with remarkable depth to them
This is what that means in card names: 2 Wooded Foothills (GD, Onslaught) 1 Bloodstained Mire (GD, Onslaught) 1 Blood Crypt (PO, Dissension) 1 Breeding Pool (LP, Dissension) 1 Hallowed Fountain (LP, Dissension) 1 Mox Diamond (NM, From the Fault: Relics) 1 Steam Vents (GD, Guildpact) 1 Mana Crypt (NM, Judge Rewards Promos)
According to the lore text at the bottom of the card, the creatures are trapped on a rock (possibly an asteroid.) Someone left behind an encrypted log recording the existence of slivers, either an unlucky explorer or, perhaps, a scientist involved in experimenting with the creatures, which would be a nice callback to the Riptide Project

Release date: 2014-04-22 Aegis of the Gods Ajani's Presence Akroan Mastiff Armament of Nyx Banishing Light Dawnbringer Charioteers Deicide Dictate of Heliod Eagle of the Watch Eidolon of Rhetoric Font of Vigor Godsend Harvestguard Alseids Lagonna-Band Trailblazer Launch the Fleet Leonin Iconoclast Mortal Obstinacy Nyx-Fleece Ram Oppressive Rays Oreskos Swiftclaw Phalanx Formation Quarry Colossus Reprisal Sightless Brawler Skybind Skyspear Cavalry Stonewise Fortifier Supply-Line Cranes Tethmos High Priest Aerial Formation Battlefield Thaumaturge Cloaked Siren Countermand Crystalline Nautilus Dakra Mystic Daring Thief Dictate of Kruphix Font of Fortunes Godhunter Octopus Hour of Need Hubris Hypnotic Siren Interpret the Signs Kiora's Dismissal Pin to the Earth Polymorphous Rush Pull from the Deep Riptide Chimera Rise of Eagles Sage of Hours Scourge of Fleets Sigiled Starfish Thassa's Devourer Thassa's Ire Triton Cavalry Triton Shorestalker War-Wing Siren Whitewater Naiads Agent of Erebos Aspect of Gorgon Bloodcrazed Hoplite Brain Maggot Cast into Darkness Cruel Feeding Dictate of Erebos Doomwake Giant Dreadbringer Lampads Extinguish All Hope Feast of Dreams Felhide Petrifier Font of Return Gnarled Scarhide
