为 忠于巨龙 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！
As an additional cost to cast this spell, you may behold a Dragon.
Target player discards a card with the greatest mana value among cards in their hand. If a Dragon was beheld, exile that player's graveyard.
