I like it especially in Yawgmoth, Thran Physician decks, which feels thematically appropriate
Aberrant Researcher Academy Researchers Arcane Archery Archers of Qarsi Archers' Parapet Archery Training Atzocan Archer Aven Archer Bamboo Grove Archer Bassara Tower Archer Blood Researcher Carmen, Cruel Skymarcher Centaur Archer Court Archers D'Avenant Archer Dawn's Light Archer Dawnray Archer Duskborne Skymarcher Elite Archers Elvish Archers Exultant Skymarcher Ezuri's Archers Femeref Archers Finneas, Ace Archer Fire Nation Archers Firebrand Archer Forensic Researcher Goblin Researcher Grave Researcher Hapless Researcher Hawkeye, Avenging Archer Innocuous Researcher Jagged-Scar Archers Joined Researchers Keen-Eyed Archers Krosan Archer Legolas, Master Archer Longbow Archer Melek, Reforged Researcher Mounted Archers Nashi, Searcher in the Dark Norwood Archers Palazzo Archers Poison-Tip Archer Sacellum Archers Sadistic Skymarcher Sagu Archer Samite Archer Scattershot Archer Skeleton Archer Skymarcher Aspirant Skyshroud Archer Stalked Researcher Tajuru Archer Talas Researcher Tamiyo, Field Researcher Tel-Jilad Archers Thornbow Archer Thornweald Archer Vhal, Candlekeep Researcher Warped Researcher Yuyan Archers ther Searcher
Cascade itself is something of an alternative cost, and the requirements for being able to cast that exiled spell rely on the regular mana cost of a card rather than any alternative, optional cost
For rapidly moving prices, there's a delay between what's happening in the market and what the chart shows
