From's Gambit, Langheld Gambit

The Langheld Gambit, 3...Nf6, postpones the recapture on d6 in favor of development, so Black is temporarily two pawns down. White most often answers with 4. Nf3, and 4. dxc7, which grabs a third pawn, is almost as frequent. The line is considered dubious and full of traps. It is played mainly in blitz and bullet, and FM William Graif's advocacy has given it some recent popularity. The engine gives White a slight edge, yet Black scores well on Lichess.