The deck features a ton of different ramp spells to help do this: acceleration effects (Battery Bearer, Cradle Clearcutter), Land fetch effects (Bushwhack, Floriferous Vinewall), and spells that generate powerstone tokens (Geology Enthusiast, Argothian Opportunist, Stern Lesson)
And Jim Hawkins can enable you to play some very expensive and powerful locations for free
Kuja, Genome Sorcerer/Trance Kuja, Fate Defied stands in to represent any effect that results in a black wizard and contributes extra damage with your noncreature spells
You can pay for convenience or availability , but Magic is an expensive enough hobby as it is
Grafdiggers Cage Grafdigger's Cage has lots of utility
Dont use it until it gets maximum value