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Amex MRs are pretty easy to earn. If you want to risk it, go for it. There are plenty of stories similar to this actually. I only got 25k to show on the incog, not 50.
Login and then click this for 50K / $2K https://www.americanexpress.com/us/credit-cards/card/premier-rewards-gold/39309-NOBANPRG17