Instant
English Oracle text
Undergrowth — Search your library for a black card with mana value less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle.
Printed text
瞬间
朽力~坟墓场中的生物牌从你的牌库中搜寻一张总法术力费用等于或小于你坟墓场中生物牌数量的黑色牌,展示该牌,将它置于你手上,然后将你的牌库洗牌。