Cloudstone Curio (RAV-257) - Ravnica: City of Guilds Foil Artist_Stephen Stark and it's returned from the

and it's returned from the battlefield to its owner's hand at the beginning of the next end step

it deals that much damage to each creature that player controls

Card TypeLegendary Creature — Frog Spirit Elemental

if you control twenty or more creatures

Card TypeLegendary Creature — Human Scientist

Cloudstone Curio (RAV-257) - Ravnica: City of Guilds Foil Artist_Stephen Stark and it's returned from theCasting Cost Card TypeArtifact RarityRare ArtistHeather Hudson Legalities NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Timeless NOT LEGAL Gladiator NOT LEGAL Pioneer LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl NOT LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern LEGAL Predh Whenever a