Even if Malakir Bloodwitch doesn't end a game outright, it can be used to create a massive divide in life totals that can be difficult for opponents to recover from
Id consider using Sorin, Imperious Bloodlords bigger (younger?) brother Sorin, Vengeful Bloodlord to help rebuild in case the unthinkable happens
Its also nice to have a 0-mana sacrifice outlet attached to a commander, though this one isnt nearly as powerful as the likes of Yawgmoth, Thran Physician
As long as you have 0 or less life, all damage is dealt to you as though its source had infect
Successfully causing six of an opponents Pokmon cards to faint or having their active Pokmon faint whilst they have no Pokmon cards on their bench will win them the game
They include just the right number of packs to get a good flavor for the set, along with neat things like special dice, and a storage box to put everything in