为 聚龙台风 寻找最佳的标准套牌，包括其胜率、热度，以及该牌在万智牌：竞技场中的合法赛制！
Whenever you cast your first Omen spell each turn, conjure a duplicate of that card onto the battlefield. It gains haste. At the beginning of the next end step, shuffle it into its owner's library.
