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.…