Sa-Lee, the Ever Dieing

When Sa-Lee, the Ever Dieing enters the battlefield, distribute three -1/-1 counters
on up to three target creatures.
Creatures with -1/-1 counters have Wither.
(This deals damage to creatures in the form of
-1/-1 counters.)
{b}{g}{u}{t}: Put a -1/-1 counter on each creature
that already has a -1/-1 on it.