I looked for something similar to this on gatherer and was surprised not to see it immediatelly. It seems an obvious "clear the board but help me in the right circumstance". It probably is much too good at 4 mana, if you can pair it with a very strong creature, but I'd still expect to see if (perhaps at a higher mana cost or on a creature). Did I miss some obvious examples?

I think I designed this card myself, once, but it was White. I suppose it makes just as much sense on Black, though...

No, I think this is a unique effect. They recently printed the discard equivalent. Seems printable (at rare) to me. If the cost needs to rise it's only because it's sacrifice rather than destruction.

­Cataclysm is the wider-ranged version of this.

Yeah, it could equally well be destroy. I think it originally was, but when we got as far as "each player chooses" sacrifice sounded more natural.

Oh yes, I tried searching, but obviously didn't have the keyword "the rest". Yes, that's the effect I was thinking of, although I think it's probably overkill to sacrifice lands too, since if you can get one giant creature down, that would prevent anyone else catching up.

"Each player chooses a creature he or she controls, then sacrifices the rest."

The white version of this was spoiled as Divine Reckoning, so great minds think alike it seems :)

Bah! W1z0rzdz keeps yoinking my ideas!

Oh, cool. I'll play with that, then :)

Apparently I costed it just right (theirs even has a small bonus of flashback), jmg's must be even closer if it was white.