Cilverant Judger of Mankind

Upkeep: If your life total did not change last turn,
add a +1/+1 counter to Cilverant. If you gained or lost life last turn remove a +1/+1 counter. If at the beginning of your turn Cilverant has seven or more +1/+1 counters on him, remove seven counters and target player loses the game.

If this creature blocks or becomes blocked, remove a +1/+1 counter and prevent all combat damage.