I'm not sure if this contravenes the rule that black can't sacrifice its own drawback permanents. I've never been sure about that rule anyway, because there are things like Claws of Gix and Synod Sanctum, but if this does contravene, I should probably follow the rule anyway.

Scary scary scary. W/B Sorin, Lord of Innistrad / Lingering Souls / Flagstones of Trokair / Smallpox deck. GG. Haha.

From a design standpoint, I think the correct black thing is "sacrifice an artifact, creature or land". Though admittedly, much less elegant.

Hah. I'm rather tempted to say that it's not my fault if Wizards print a bunch of ludicrously strong WB tokens cards six months after I design this thing :P The extent to which they've pushed that archetype with Dark Ascension is quite excessive. As shown by the way they banned Lingering Souls in block, haha.

But it'd probably be safer and still fine if this card had added to the activation cost of both abilities.