Zahen, The Purifier

Cursed 4 (This permanent enters the battlefield with
4 curse counters on it.)
{2}{c}: Remove a curse counter from Zahen.
{9}{c}: Remove all curse counters from Zahen
If Zahen has no curse counters,
remove all counters from all permanents. All
other creatures have base power and toughness
0/0 until end of turn. Then put four curse
counters on Zahen.