Mist of Twisted Realities

If an effect, other than effects resulting from abilities of cards named Mist of Twisted
Realities, would put one or more +1/+1 counters
on a creature, it puts that many -1/-1 counters on
that creature instead.
If an effect, other than effects resulting from abilities of cards named Mist of Twisted
Realities, would put one or more -1/-1 counters
on a creature, it puts that many +1/+1 counters
on that creature instead.