Jaya Ballard requires mana and a discard, but you can activate any ability immediately without worrying about counters
1 Hakbal of the Surging Soul 1 Xolatoyac, the Smiling Flood 1 Mist Dancer 1 Ripples of Potential 1 Wave Goodbye 1 Bygone Marvels 1 Deeproot Historian 1 Topography Tracker 1 Tributary Instructor 1 Singer of Swift Rivers 1 Benthic Biomancer 1 Commit /// Memory 1 Coralhelm Commander 1 Curse of the Swine 1 Emperor Mihail II 1 Herald of Secret Streams 1 Kindred Discovery 1 Kopala, Warden of Waves 1 Master of the Pearl Trident 1 Merfolk Sovereign 1 Reflections of Littjara 1 Seafloor Oracle 1 Surgespanner 1 Svyelun of Sea and Sky 1 Thassa, God of the Sea 1 Thieving Skydiver 1 Branching Evolution 1 Deeproot Elite 1 Hardened Scales 1 Realmwalker 1 Ruinous Intrusion 1 Cold-Eyed Selkie 1 Kumena, Tyrant of Orazca 1 Prime Speaker Zegana 1 Quandrix Command 1 Simic Ascendancy 1 Tishana, Voice of Thunder 1 Vorel of the Hull Clade 1 Zegana, Utopian Speaker 1 Metallic Mimic 1 Alchemist's Refuge 1 Hinterland Harbor 1 Karn's Bastion 1 Mosswort Bridge 1 Temple of Mystery 1 Vineglimmer Snarl 1 Merfolk Cave-Diver 1 Aetherize 1 Deeproot Waters 1 Merrow Reejerey 1 Rapid Hybridization 1 Ravenform 1 Sage of Fables 1 Stonybrook Banneret 1 Beast Within 1 Nicanzil, Current Conductor 1 Evolution Sage 1 Explore 1 Inspiring Call 1 Kodama's Reach 1 Growth Spiral 1 Kiora's Follower 1 Merfolk Mistbinder 1 Merfolk Skydiver 1 Tatyova, Benthic Druid 1 Arcane Signet 1 Commander's Sphere 1 Simic Signet 1 Sol Ring 1 Swiftfoot Boots 1 Command Tower 1 Llanowar Reborn 1 Myriad Landscape 1 Path of Ancestry 1 Reliquary Tower 1 Rogue's Passage 1 Secluded Courtyard 1 Simic Growth Chamber 1 Temple of the False God 1 Unclaimed Territory 7 Forest 13 Island Explorers of the Deep Tokens 1 Bird // Merfolk token 1 Beast // Merfolk token 1 Frog Lizard // Merfolk token 2 Boar // Merfolk tokens 2 Boar // Merfolk (hexproof) tokens 1 Map // Merfolk (hexproof) token 2 Copy // Merfolk (hexproof) tokens Bird // Merfolk Beast // Merfolk Frog Lizard // Merfolk Boar // Merfolk Boar // Merfolk (Hexproof) Map // Merfolk (Hexproof) Copy // Merfolk (Hexproof) Veloci-Ramp-Tor Pantlaza, Sun-Favored and Wayta, Trainer Prodigy are traditional foil cards
You'll also be able to find every card in the Commander decks, apart from the plane cards, in traditional foil in Magic: The Gathering Doctor Who Collector Boosters
Note this is cast, so if countered, it'll still resolve
