When you cast it for its prototype cost it becomes a three-mana 1/3, which in a set with tons of Powerstone ramp but very little ramp elsewhere, can prove vital

1 Space Marine Devastator 1 Ultramarines Honour Guard 1 Vexilus Praetor 1 Zephyrim 1 Vanguard Suppressor 1 Belisarius Cawl 1 Company Commander 1 Epistolary Librarian 1 Inquisitor Eisenhorn 1 Neyam Shai Murad 1 The Golden Throne 1 Sanguinary Priest 1 Deny the Witch 1 Primaris Chaplain 1 Entrapment Maneuver 1 Utter End 1 Reconnaissance Mission 5 (13) 1 Marneus Calgar 1 Celestine, the Living Saint 1 Triumph of Saint Katherine 1 Sister of Silence 1 Primaris Eliminator 1 Birth of the Imperium 1 The Flesh Is Weak 1 Sister Repentia 1 Knight Paladin 1 Redemptor Dreadnought 1 Grey Knight Paragon 1 Thunderwolf Cavalry 1 Fell the Mighty 7 (4) 1 Exterminatus 1 Reaver Titan 1 Deploy to the Front 1 Hour of Reckoning Common (30) 1 Mind Stone 1 Arcane Signet 1 Commander's Sphere 1 Command Tower 1 Dismal Backwater 1 Evolving Wilds 1 Path of Ancestry 1 Scoured Barrens 1 Terramorphic Expanse 1 Tranquil Cove 5 Island 7 Swamp 8 Plains Uncommon (19) 1 And They Shall Know No Fear 1 Grey Knight Paragon 1 Space Marine Scout 1 Thunderwolf Cavalry 1 Sicarian Infiltrator 1 Sanguinary Priest 1 Deny the Witch 1 Primaris Chaplain 1 Swords to Plowshares 1 Reconnaissance Mission 1 Mortify 1 Skullclamp 1 Sol Ring 1 Talisman of Dominance 1 Talisman of Hierarchy 1 Talisman of Progress 1 Arcane Sanctum 1 Ash Barrens 1 Memorial to Glory Rare (49) 1 Celestine, the Living Saint 1 Defenders of Humanity 1 For the Emperor

White Mage's Staff is the card to trigger those, but unfortunately you shouldnt get passed too many of those as its one of the better commons
Theres also relative newcomer Inkshield, which, while expensive to cast, will easily set you up for the win on your next turn
Let me know in the comments, and as always leave your thoughts, ideas, opinions and suggestions in the comments, and you can reach me on Twitter @SaffronOlive, or at [email protected].
Legends (1994) First appearance of the gold frame, representing multicolored cards