Plaguespreader Zombie

Plaguespreader Zombie enters the battlefield with 2 plague counters on it. You may remove 4 plague counters from Plaguespreader Zombie, target opponent discards 1 card from his/her hand.
{t}: Put a plague counter on Plaguespreader Zombie.
Wither (This deals damage to creatures in the form of -1/-1 counters.)