This is Reverse Polarity, a card from Antiquities (1994), later reprinted in Revised
This is Reverse The Polarity, a card from Universes Beyond: Doctor Who (2023), which is not Reverse Polarity, pay attention to the added article, because a very important and necessary rule in Magic: The Gathering card naming is that, even through reprints and rethemings, one card name must correspond to one effect
This is Inversion de Polarité, the card from earlier, translated into French, of note here is of course that French doesn't allow nouns to be left alone without an article, and that means that, when translating Reverse The Polarity, you can't add an article, because it is already there; you could in theory have "Inversion de la Polarité", but it is clunky, inelegant construction; so, to keep to the rule that a card with a new effect must have a new noun, the translators of Magic the Gathering in France devised this:
Inverser la polarité du flux de neutrons