Droch

While this card is on the field, the player can pay {3}{b} to equip this card to a card on the
opponent's field. The equipped card places a
-1/-1 counter on it at the beginning of each
player's turn. When the card's defense value
reaches 0, destroy it and place Droch back on the player's field, and then place +1/+1 counters
equal to the destroyed card's original defense
value on it.
"The source of the feared Death Seed Plague."