>>546262598
>>Event, changed my last basic attack to a neutral (+10 points) so 60
>Deck reuslt: 90 points with nerfs.

>TL;DR: it seems converting a basic card into a neutral counts as both "+10" as well as the cost of removing a basic card out of your deck.

Isn't is more plausible that it counts as:
>+10 points (converting the card)
>+20 points (the neutral card that it gets converted into)