Grave Peril 1

Enchantment
When a non-black creature comes into play, sacrifice Grave Peril. If you do, destroy that creature.
An interesting SB card, it removes Worldgorger Dragon and non-Sutured Ghoul Dread Return's creatures, as well as pre-empts Goblin Welders, non-Darksteel Colossus Tinker targets, Goblin Welder targets, Xantid Swarms and all of 5/3 and Fish's creatures. It's a jack of all trades, master of none SB card that covers a lot of bases against a lot of different decks.
Could be good, could be terrible.