为 灵龙庇护地 寻找最佳的先驱套牌，包括其胜率、热度，以及该牌在万智牌：竞技场中的合法赛制！
: Add .
: Add one mana of any color. Spend this mana only to cast a Dragon creature spell.
, , Sacrifice this land: Return target Dragon creature card or Ugin planeswalker card from your graveyard to your hand.
