Baby, you like Dom, maybe this Cristals'll
Change your life, huh?

from Jay Z – Dead Presidents II Lyrics on Rap Genius

Meaning

Jay prefers Cristal to Dom (this changed; let him change your life girl)

Jay is also saying, in plain english, — ‘maybe these crystals will change your life…’ As in — if you like riches (Dom Perignon) maybe these crystals (selling crack rock) will change your life.
Making this line a load better than he’s given credit for, as Cristal (the champagne) is a homonym for crystal which in turn is slang for crack cocaine. Ya dig?

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