It wont be both black and colorless
Cards like Cosmos Charger and Ranar the Ever-Watchful let you reduce the costs to foretell a card

Ambush Viper Anaconda Ankle Biter Archers of Qarsi Bamboo Grove Archer Big Boa Constrictor Blight Mamba Boa Constrictor Broodbirth Viper Bushmaster, Coiled Henchman Caustic Bronco Champion of Wits Chishiro, the Shattered Blade Coiled Tinviper Coiling Oracle Coiling Stalker Constrictor Sage Crypt Cobra Death-Hood Cobra Desiccated Naga Devotee of Strength Dread Linnorm Dune Diviner Enduring Tenacity Erebos's Emissary Fanatic of Rhonas Fang of Shigeki Fangkeeper's Familiar Feiyi Snake Fire Snake Floral Evoker Glass Asp Gravebreaker Lamia Guardian Naga Gurmag Drowner Hagra Constrictor Harrier Naga Heir of the Ancient Fang Hexdrinker Honored Hydra Hooded Blightfang Hooded Brawler Hooded Hydra Hope-Ender Coatl Hornet Cobra Ice-Fang Coatl Ikra Shidiqi, the Usurper Imoti, Celebrant of Bounty Jade-Cast Sentinel Jewel-Eyed Cobra Kadena's Silencer Kadena, Slinking Sorcerer Kaseto, Orochi Archmage Kashi-Tribe Elite Kashi-Tribe Reaver Kashi-Tribe Warriors Kheru Spellsnatcher Kirin-Touched Orochi Krosan Constrictor Lasyd Prowler Lonis, Cryptozoologist Lonis, Genetics Expert Lorescale Coatl Lotus Cobra Marsh Boa Marsh Viper Matsu-Tribe Birdstalker Matsu-Tribe Decoy Matsu-Tribe Sniper Mire Boa Mist-Syndicate Naga Mold Adder

(There are, however, no guarantees the pack will contain anything of value.) Prices start as low as $25 and, until recently, were capped at $2,500
What can you do to craft a playstyle which feels right for a Sorcerer versus one for a Wizard