为 地震巨龙 寻找最佳的史迹套牌，包括其胜率、热度，以及该牌在万智牌：竞技场中的合法赛制！
This spell costs less to cast, where X is the total mana value of Dragons you control not named Earthquake Dragon.
Flying, trample
, Sacrifice a land: Return A−Earthquake Dragon from your graveyard to your hand.
