There is an issue with the french translation of the game. Every land of the game don't have the first letter capitalized.
For example, we have "plaine" instead of "Plaine" or "marais" instead of "Marais"
It's really tilting for cards that we use all the time.. i mean, they are basic lands, every french player can see it.
There's also this issue for some creature, but it's much rarer. for example "Nightmare" is called "cauchemar" (which is not the original translation btw, the real card was called "Cheval de cauchemar", but that's not important too). I just wish for the names of basic lands to be fixed.