为 钻心袭击客 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！
Threshold — As long as seven or more cards are in your graveyard, this creature gets +3/+0.
: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
