Amazon Mastercard by MBNA
* 2.5% return on Amazon purchase, restaurants and groceries, 5% for first 6 months, 1% on all other purchases
* No exchange fees
* Prime membership required
He didn't disclose with which financial institution but his post history suggests he works for TD. Another redditor "validated" the claim by saying that he worked for the same FI and was reporting the OP for breach of confidentiality. OP quickly deleted his posts after this.
Take this with a grain of salt and mods, feel free to delete/move if you see fit.