Various set and rep schemes will work (4x6, 5x5, 6x4, 7x5, 8x3, 5/4/3/2/1, 5/3/2/5/3/2, 6x3, 10x1, etc.).
How strong are you currently? Are you able to deadlift at least 1.5 times your bodyweight? If not, I would focus on continuing to lift to get stronger. In that case, you could use less sets and reps (3x5, 4x5, 5x5, 4x3, 3x3).
Although variety is good, I still recommend using low reps when deadlifting. It's better for your form and enables you to lift heavier weights. I, personally, never do more than five reps with the deadlift. And I'll do multiple sets of low reps. I also reset myself after each rep to ensure I'm using good form.