为 剥念客 寻找最佳的竞技争锋套牌，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 — : Put a +1/+1 counter on this creature and draw a card. Activate only if there are seven or more cards in your graveyard and only once.
