What 15 Essential MAC eyeshadows should I get?

I am looking to build my MAC eyeshadow collection. I was thinking of getting a 15 pan. What are some staples/ must haves/ neutrals/ beginner eyeshadows I should get? I wear MUFE HD 120 which is I believe a NC20 or NC25 (I could be wrong). I have hazel eyes, naturally medium brown hair (but it is heavily highlighted with warm light brown and warm blonde colors, so it is light brown/ blonde now). I have received two MAC quads as gifts in the past, so I already own ricepaper, amber lights, tempting, corduroy, manila paper, flip (le), aztec brick (le), and creole beauty (le). Thanks so much in advance!!