Well, all I can say is: Finally our luck changes (just in time).
We picked a rainbow to counter discord, hoping they wouldn't take black holes too. Sadly they did, but I got nice draws both games: 3 nova, 1 discords and 1 earthquake in the first 10 cards, meaning I could deny (most of) his gravity quanta, and scramble the rest, so I never saw a black hole. After that, it was just waiting until my creatures had killed him.
The deck:
4vj 4vj 4vj 4vj 4vj 4vj 4vl 4vl 590 590 590 593 593 5c1 5i4 5i4 5i4 5i4 5i4 5i6 5i6 5i6 5ib 5ib 5jm 5jm 5jm 5jm 5jm 61q