I believe Westpac has renamed their Low Rate Mastercard to a Fee Free Mastercard. Main difference is that it now offers no foreign exchange fees. This could be the first of its kind in NZ and hopefully we'll see more of these types of offerings from other banks. Also includes other benefits such as balance transfers.
Deal from last year:
https://www.cheapies.nz/node/27177
May be fee free, but you'll still be paying retail forex rates. Best to stick to Wise as they're completely transparent about fees and rates.