Parascak attended and played for the Edge School before joining the Prince George Cougars during the 2022–23 WHL season, playing in five regular season games.[1] The following season, Parascak scored 105 points, the eighth-highest total in the league. He was the runner-up for the WHL Rookie of the Year award and was named to the CHL All-Rookie Team.[1][2] He was drafted 17th overall, in the first round of the 2024 NHL entry draft by the Washington Capitals.[3] He signed an entry-level contract with the team on July 5, 2024.[4]