And thats what would keep Prophet contained
Each card has a set of attributes, including mana cost, abilities, and a power and toughness value
Add in additional equity with cycling combos with cards like Drake Haven, and we have a card draw spell that will see ample play in Standard

Advanced Search Sets Random Syntax Afflicted Deserter Ballista Watcher Ballista Wielder Bane of Hanweir Baneblade Scoundrel Baneclaw Marauder Breakneck Rider Burly Breaker Child of the Pack Conduit of Emrakul Conduit of Storms Dire-Strain Demolisher Duskwatch Recruiter Erupting Dreadwolf Fangblade Brigand Fangblade Eviscerator Fibrous Entangler Flameheart Werewolf Frenzied Trapbreaker Gatstaf Howler Gatstaf Shepherd Geier Reach Bandit Greater Werewolf Hanweir Watchkeep Hermit of the Natterknolls Hound Tamer Howling Chorus Infestation Expert Infested Werewolf Kessig Forgemaster Kessig Naturalist Kessig Prowler Krallenhorde Howler Lambholt Butcher Lambholt Elder Lambholt Pacifist Lambholt Raconteur Lambholt Ravager Lesser Werewolf Lone Wolf of the Natterknolls Lord of the Ulvenwald Merciless Predator Moonlit Ambusher Moonrise Intruder Neck Breaker Oakshade Stalker Outland Liberator Reckless Waif Savage Packmate Shrill Howler Silverpelt Werewolf Sinuous Predator Smoldering Werewolf Spellrune Howler Spellrune Painter Tangleclaw Werewolf Ulvenwald Mystics Ulvenwald Primordials Untamed Pup Vildin-Pack Alpha Village Messenger Village Reavers Village Watch Wedding Crasher Werewolf Ransacker Wolfkin Outcast

The resulting spell's color, mana cost, mana value, and so on are determined by only those alternative characteristics
Where do you fall into the spectrum of the love/hate relationship with Magics infect mechanic