By Lizzy Becherano The Philadelphia Union is set to make their MLS Cup debut on Saturday after triumphing in the Eastern Conference. The team concluded the regular season in first place with 67 points in 34 games and a record of 19W-5L-10D, before conquering reigning champions New York City FC and FC Cincinnati in the playoffs to reach the coveted final. But the pressure is on as LAFC enter Saturday’s match as the clear favorites, after clinching their second Supporters’ Shield and managing 21 victories. Though Union forward Daniel Gazdag expects a difficult match at the Banc of California Sta…