Kolos is elo banned.
The point is, you shouldn't get - point for winning.
May be give 20+ for using standard card and give 1 for elo banned card.
Negative reward is unacceptable...
I hate dealing with enemy bonus, but Nightmare NEED One more useful card with 8 Power, 6 Damage, any ability is fine.
-10 for Ambre,
-5 for Kolos, Oshitsune, and Gumbo.
At most -25 penalty.
According to the point distribution in the game help section:
+2 point or 1 pill left
+2 for 12 life left (your life)
+15 for victory
-25 for deck
= -6 net point gain
I think I my math was wrong somewhere. There should be other factors. But that slightly represents why you lost points.