Zothikros, Withering Wyrm

Flying, indestructible
If Zothikros would enter, if it wasn't cast or no
mana was spent to cast it, exile it instead.
Non-basic lands your opponents control are
Wastes.
Whenever Zothikros deals combat damage to a
player, put a -1/-1 counter on each creature that
player controls. Creatures your opponents control
with -1/-1 counters on them are 1/1 green Oozes
and lose all other creature types and abilities.