Mouthless watcher

When this creature destroys
another creature you may pay
{3}, if you do that creature enters the battlefield
next turn with a -1/-1 counter on it
under you control it also becomes
a zombie creature in addition to all
other types.
Mouthless watcher's power and
toughness is equal to swamps you control.
You can't blind the blinded-Alena,
trapper of Kessig