The mana dorks help you pull a thragtusk to get your life back up, combined with resto angel to get more. You also have sphinx's return and angel of serenity to deal with burn and aggro. Sideboard has supreme verdict, abrupt decay, and sigarda to help deal. With all the dual lands and mana dorks, you don't really need a lantern. Nightveil Specters wouldn't even be considered before vampire nighthawk.
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I would add 4x Champion of the parish in place of the dryad militants (sideboard), and Boros Reckoner is a mainboard in ALL Boros decks. Also, maybe add 2 or 3 Cavern of Souls. Also, try using the nearheath pilgrim (soulbound with boros reckoner and either attacking with Frontline Medic or boros charm (indestructible) can give you the infinite life combo).
This isn't a reanimator deck.
The infinite is using the cartel aristocrat for the sacrifice ability. The main purpose of the undercity informers is to mill yourself until you build your graveyard with the angel, the Cartel Aristocrat (which you use for infinite, no mana cost sacrificing), the fiend hunter, and either kessig malcontents or huntmaster. I also toyed with the idea of taking undercity informers out for Jarad's Orders, so I could creature fix quicker without relying on chance.
Blind Obedience in sideboard to deal with haste. The extort effect doesn't go off for the combo until vizkopa is in play, so you can't cast vizkopa and extort from it, and end the game.
Sorry, it was Falkenrath Aristocrat, not Vampire Aristocrats.
Snapcaster gives me flexibility. I have 4 extra chances at bioshift, abrupt decay, or farseek. He also helps out quirion dryad with 2 or more surprise counters.