Parting Thoughts counts every kind of counter on that creature. Effects such as that of Giant Growth, Auras, and Equipment aren’t counters.
08-11-2016
wotc
Parting Thoughts can target a creature without any counters on it. You’ll lose no life and draw no cards.
08-11-2016
wotc
If a creature has +1/+1 counters and -1/-1 counters on it, state-based actions remove the same number of each so that it has only one of those kinds of counters on it. There won’t be any counters of the other kind for Parting Thoughts to count.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.