The same should be done with BlackHole. It is OP when Nova was nerfed and it is overused in games, especially with Rainbows.
black hole is fine, the strength of it came when rainbows became so overused.
just add sanctuaries or play monos or duos where it's close to useles.
You are Master of Gravity, so I understand that You defend this card
![Wink ;)](https://elementscommunity.org/forum/Smileys/solosmileys/wink.gif)
BlackHole is OP also against non-rainbows. I didn't play rainbows and BlackHole really hurts me, especially with Quicksand or Discord.
Nova gives 24 quantum, so BlackHole should also destroy 24 quantum and as bonus for defend card gives 24 heal. Then it will be balanced. Or cancel heal bonus... When SoFo come into a game then players can have 12 BlackHoles (24 in Arena!), remember about it.
I want nerf rainbows, buff gravity, but BH is OP.