Spasmagister, Polluted Soul

Whenever a creature an opponent controls becomes tapped, put a -1/-1 counter on that creature and Spasmagister, Polluted Soul.
When Spasmagister Polluted Soul dies, if it had 9 or more -1/-1 counters on it, proliferate, then proliferate again (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)
"When he falls, we will have failed."