30 cards where the set is “rvr” and the collector number >= 416 and the collector number <= 445

Arclight Phoenix (Ravnica Remastered #427)
Aurelia, Exemplar of Justice (Ravnica Remastered #436)
Birds of Paradise (Ravnica Remastered #432)
Bruvac the Grandiloquent (Ravnica Remastered #418)
Chromatic Lantern (Ravnica Remastered #442)
Cloudstone Curio (Ravnica Remastered #443)
Crypt Ghast (Ravnica Remastered #423)
Cyclonic Rift (Ravnica Remastered #419)
Divine Visitation (Ravnica Remastered #416)
Domri Rade (Ravnica Remastered #444)
Fblthp, the Lost (Ravnica Remastered #420)
Guardian Project (Ravnica Remastered #433)
Hellkite Tyrant (Ravnica Remastered #428)
Ilharg, the Raze-Boar (Ravnica Remastered #429)
Karlov of the Ghost Council (Ravnica Remastered #437)
Krenko, Mob Boss (Ravnica Remastered #430)
Life from the Loam (Ravnica Remastered #434)
Lord of the Void (Ravnica Remastered #424)
Massacre Girl (Ravnica Remastered #425)
Niv-Mizzet, Parun (Ravnica Remastered #438)
Pack Rat (Ravnica Remastered #426)
Prime Speaker Zegana (Ravnica Remastered #439)
Protean Hulk (Ravnica Remastered #435)
Ral Zarek (Ravnica Remastered #445)
Savra, Queen of the Golgari (Ravnica Remastered #440)
Spark Double (Ravnica Remastered #421)
Teysa, Orzhov Scion (Ravnica Remastered #441)
Tidespout Tyrant (Ravnica Remastered #422)
Tomik, Distinguished Advokist (Ravnica Remastered #417)
Utvara Hellkite (Ravnica Remastered #431)

The message was clear to Sorin—time to search for something else.