Thank you everyone!
I'm happy to see this idea is accepted better than I expected.
I realized this card can have a decent effect, especially with Black Holes, as many ones said.
But now I'm little worried about one thing:
if most people say there's no need to change, may I submit this without a single change
to the Crucible? Or do I still have to change something like the cost?
In that case, I'll add a poll asking whether this card is strong or weak,
and change the cost according to the result.
Surprisingly, this is exactly what is in my head.