I have two offers for the Amex Gold card (U.S.) that do not have any lifetime language. These came in an email to me titled "You're invited to share a pre-approved offer." Offer is 50K Membership Rewards after $2,000 spend in first three months.
PM me for link and please be serious about applying because once I give it away, I can't use it again, regardless if you apply or not.
Note: Expires on January 8th 2019.
EDIT: Both Gone