The Gravemind

Ward X, Absorb X (X is the number of creatures you control but don't own)
If 1 or more creatures would have enough -1/-1 counters to reduce their toughness to 0, you may remove those counters and take control of that creature. It is a Flood creature in addition to its other types. If an opponent loses the game by having 10 poison counters, take control of that players nonland permanents. Exile permanents you control but don't own when this card leaves the battlefield.