Still, artifact-based proliferate cards like Culling Dais, Contagion Clasp and of course, Contagion Engine can factor in to all 5 decks
Non-English names allow for the Portuguese Millstone to have a two-character name
That's why we're bringing them back with four Scene Boxes

Abstruse Interference Adverse Conditions Afterlife Insurance Ancestors' Aid Angelic Favor Ashling's Command Assimilate Essence Auspicious Arrival Bake into a Pie Banish into Fable Battle Menu Beckon Apparition Blast from the Past Blessed Defiance Blooming Blast Brackish Blunder Broken Visage Cackling Counterpart Charge of the Mites Commence the Endgame Corpse Cobble Crumb and Get It Crush Dissent Cunning Maneuver Dance with Devils Deadly Derision Deadly Dispute Deceive the Messenger Depths of Desire Desculpting Blast Drag the Canal Eldrazi Confluence Elminster's Simulacrum Errand of Duty Espers to Magicite Excise the Imperfect Exotic Pets Eyes in the Skies Fake Your Own Death Fanatical Offering Fated Infatuation Fateful Absence Feast or Famine Feed the Cauldron Felonious Rage Flip the Switch Fractal Anomaly Fungal Infection Geist Snatch Glen Elendra's Answer Glimmerburst Gnawing Crescendo Grave Birthing Great Train Heist Grip of Phyresis Hire a Crew Hornswoggle Humble the Brute Inkshield Into the Flood Maw Intrude on the Mind Jace's Scrutiny Kaya's Guile Launch Mishap Lazotep Plating Lithobraking Lorehold Command Lost Days Magma Opus Make Your Mark Merciless Repurposing

Doing both while also having the occasional upside of cheating mana costs on a Room makes this a solid include
As for cool new creature types, Tempest introduced Sliver, Crab, Shapeshifter, Licid, and Spike