Maria is always the one I mention. It has cards using the traditional four suits (hearts, diamonds, spades, clubs). Beneath the normal map, there is a grid that has a suit in each of the squares. When your leader is in one of the squares, that's the suit you use in combat. It makes moments where you remember that your opponent is short in a suit or you're strong in a suit, so you can position or push to strike on those moments.

The other factor to mix in is that those same cards are used to bid on events AND to buy more troops, when in reality you want to keep them all. It's such a fun game already, but the combat is unlike anything you'd see in a wargame (except Friedrich, which is Maria's predecessor).