Nvidia has laid a new brick in its AI empire. NVentures, its corporate VC fund, has backed Legora, reportedly its first legal AI investment. Leveraging AI to help lawyers streamline their work, the Swedish-born legal tech startup is competing with U.S. player Harvey. Alongside Atlassian and other new financial investors, NVentures joined Legora’s cap table as part of a $50 million Series D extension that comes a month after the startup’s $550 million Series D.  In the interval, this Y Combinator alum crossed $100 million in annual recurring revenue (ARR) — a milestone that contributed to its new $5.6 billion post-money valuation.  This brings Legora’s valuation just a tad closer to Harvey’s, which reached $11 billion last month when Sequoia tripled down on its investment. Andreessen Horowitz, Coatue, Conviction Partners, Elad Gil, Matt Miller’s Evantic, and Kleiner Perkins also participated in that round. Legora, too, is backed by high-profile VCs, but it puts even more emphasis on the big names it secured as clients, such as Bird & Bird, Cleary Gottlieb, and Linklaters. According to …