There are a whopping 32 Special Illustration Rares to track down in Prismatic Evolutions, headlined, of course, by Eevee and its eight evolutions

Abzan Banner Abzan Monument Acidic Dagger Aeolipile Aerial Toastmaster Aether Spellbomb Aetherjacket Agent's Toolkit Alchemist's Vial All-Fates Scroll Altar of the Wretched Amulet of Quoz Ancestral Carvings Anchovy & Banana Pizza Apocalypse Chime Arcade Cabinet Arcane Spyglass Arcbound Ravager Ark of Blight Armillary Sphere Ashad, the Lone Cyberman Ashnod's Coupon Ashnod's Transmogrant Astrolabe Azorius Cluestone Azorius Locket Bag of Devouring Bag of Holding Bagel and Schmear Balm of Restoration Barbed Sextant Barrels of Blasting Jelly Barrin's Codex Basilica Skullbomb Bear Trap Black Lotus Blasting Station Blitzball Blood Fountain Blood Servitor Bloodtallow Candle Booby Trap Boom Box Boros Cluestone Boros Locket Bosh, Iron Golem Bottle of Suleiman Braidwood Sextant Brainstone Breya's Apprentice Breya, Etherium Shaper Bronze Calendar Broodheart Engine Bumbleflower's Sharepot Buried Treasure C.A.M.P
Upgrades and Fiddly Bits The first card I'd splurge for is Gisela, Blade of Goldnight
You could add up the cost of Genesect's top 15 cards under this, and you still wouldn't come close to the value that this Black and White promo card holds
Flying in from the Johto region, making its debut in Pokmon Gold and Silver, is the ever-cool Crobat