Mono black infect seemed to be pretty fun, so I thought I would try it out, since I finally got all the cards together. I've tested it out a few times, and this is what I have come up with.
Creatures:
Plague Stinger and Flensermite are both decent early game plays and can help to get some quick poison counters and some life gain.
Phyrexian Crusader is just amazing and can win the game by himself, with some help from kill spells and equipments
Skithiryx, the Blight Dragon I decided to run 4 of, because he is just amazing to have on the board and usually can win me the game.
Instants and Soceries:
Virulent Wound deals with early threats and can be used to get some extra poison counters early game.
Go for the Throat is always useful to take out most threats.
Surgical Extraction is used to either tear apart their deck and remove threats, or to exile undying creatures before they can bounce back
Black Sun's Zenith is useful when I'm falling behind, and is also very good at dealing with tokens, hexproof, and regenerating creatures.
Sever the Bloodline is very useful to exile things like wurmcoil engine, or take out mass tokens. Its flashback is also extremely useful in a bind and I really enjoy this card.
Equipments:Lashwrithe because it's mono black... and because Phyrexian Crusader just wins with it.
Batterskull is useful to pump my creatures, but also it is useful with gaining back some life when faced with heavy aggro or if I just need to catch back up. Often times the deck can have a slow start.
Sideboard:
More of Black Sun's Zenith, and Surgical Extraction if I find I need them.
Doom Blades and go for the throats to switch out if needed.
Geth's Verdict is put in to deal with annoying hexproof creatures such as geist.
Tragic Slip is put in if virulent wound isn't really finding any good targets, and also for indestructible creatures.
Sword of Feast and Famine can be sided in for the protection and if I want a more aggressive approach.
