I've made a template for Magi-Nation Duel. It's fully-featured, with text and formatting assistance built in, and is a close facsimile for the actual template used in the game. Due to the quality of blanks that I had access to, they do have some differences, and text boxes do not necessarily line up between frames, but it's as close as I'm liable to get without access to the original card files.
The only features missing from official cards are a Promotional rarity symbol, which another person is currently in the process of reconstructing, and a set symbol. Due to the way those appeared on MND cards, I'm currently trying to determine how best to implement the latter.
The template can be found here; I update it periodically but this link should continue to work.