""Stronghold contains 143 black-bordered cards (44 rare, 44 uncommon, and 55 commons). It was released in March 1998. Its expansion symbol is the closed portcullis of Volrath's stronghold. Stronghold was the last set in which multicolored cards appeared until the 2000 expansion Invasion. The biggest impact of Stronghold was its Walls. Wall had traditionally been shunned by tournament players, but the Stronghold Walls were strong enough for tournament decks. Wall of Blossoms in particular became a core part of many decks.""