Metallica’s ‘Seek and Destroy’ is a staple of Sharks games, and the world-famous metal band is set to give San Jose an added boost ahead of Game 4 by playing the national anthem.The last two times Metallica has been around the Sharks, San Jose has emerged victorious. Come Game 4 of the Stanley Cup final, the Sharks — and the metal band — will have the chance to go 3-for-3. The Sharks announced Monday that Metallica frontman and guitarist James Hetfield and guitarist Kirk Hammett will take the ice ahead of Game 4 to play the national anthem, after which they’ll sign the guitars they used for the performance in support of the Sharks Foundation. The guitars will be auctioned off until June 15, with proceeds going to two yet-to-be determined charities. Metallica’s inclusion in the pre-game ceremonies makes sense given they’ve become a fixture of Sharks games. Before every home contest, the Sharks take the ice to Metallica’s ‘Seek and Destroy,’ and the band has been somewhat of a good-luck charm each time they’ve been involved in the lead-up to a contest. Throughout the post-season, the Sharks have had local icons and big-time sports figures on hand to open the dressing room door before the team takes the ice. Among those included have been former NFL running back Marshawn Lynch, Apple co-founder Steve Wozniak and rapper E-40, and Hetfield was one of those to be included in the opening of the Sharks’ room — and it came before a big game, too. Hetfield and Hammett performed the Star-Spangled Banner before Game 5 of the NBA Finals in 2015.