Gwent's season-based competitive leaderboard, so named because players go "up" or "down" it based on their results.
A ladder or ladder system in a game is a term often used to describe the game’s competitive mode of play. This is because the player will move up or down the ladder as they win or lose games in this mode. The competitive ladder is often split up into different ranks or tiers. The colloquial term for playing competitively is “climbing the ladder.”