What are the odds the Tatyova, Benthic Druid landfall deck is not running Avenger of Zendikar in the 7-mana slot or Aesi, Tyrant of Gyre Strait for 6
They, therefore, get bent when the product gets sealed
It also produces infinite triggers for magecraft
Because we were doing a faction set, we were able to use watermarks on cards and then make cards that care about those watermarks
Really like the detailing on the artwork of the 'webbing' connecting the Foul Familiar to the human

Planar Despair Prismatic Geoscope Aven Trailblazer Worldly Counsel Voices from the Void Wandering Goblins Might of Alara Spore Burst Exploding Borders Manaforce Mace Evasive Action Exotic Curse Power Armor Allied Strategies Artillery Blast Leyline Binding Sphinx of Clear Skies Voda Sea Scavenger Drag to the Bottom Shadow Prophecy Meria's Outrider Radha's Firebrand Gaea's Might Herd Migration Llanowar Greenwidow Nishoba Brawler Slimefoot's Survey Sunbathing Rootwalla Territorial Maro The Weatherseed Treaty Yavimaya Sojourner Bortuk Bonerattle Nael, Avizoa Aeronaut Radha, Coalition Warlord Zar Ojanen, Scion of Efrava Jodah's Codex Briar Hydra Strength of Unity Wayfaring Giant Collective Restraint Collapsing Borders Kavu Scout Wandering Stream Ordered Migration Territorial Kavu Scion of Draco Tribal Flames Matca Rioters Drag Down Samite Pilgrim Exotic Disease Magnigoth Treefolk Draco Stratadon Tromp the Domains There are two additional domain creatures from Alchemy: Dominaria