Burial (Casual)

The best way to win with the "Burial" deck is to play an enormous horde of Zombies and swarm your opponent. Strength of Night, which can give all your Zombies +3/+3, certainly helps. The deck has over twenty Zombies, so you should be able to quickly stink up the table with them. If you ever run into a Zombie shortage, Grave Defiler and Phyrexian Arena can help you get more.
The "Burial" deck contains a lot of versatile cards. Llanowar Dead gives you both early-game mana and a beatdown threat. Play Foul Presence on your own creature and then tap it to kill other creatures-or play it directly on an opponent's small creature to kill it. Putrid Warrior can cause everyone to lose or gain one life. Usually you want everyone to lose one life, but opt for the life gain if you're low on life or if you have Phyrexian Arena in play. Soul Link can also boost your life total if you play it on one of your creatures that's attacking successfully, or you can use it to neutralize an opposing threat. It also goes great on a blocker, ideally Grave Defiler.

Zombies are cheap and plentiful, but they fall apart rather easily. That means the "Burial" deck might have trouble against a deck with lots of big creatures. One way to deal with them is to gang up on attackers. Also, don't forget that Grave Defiler can regenerate; it can hold off a big creature indefinitely. The deck is also stocked with creature-kill spells, which range from the straightforward (Annihilate, Death Grasp) to the tricky (Dead Ringers, Consume Strength). And because green has the biggest creatures, the "Burial" deck includes a couple of Phyrexian Reapers that are custom-made for rubbing them out.

Since the "Burial" deck has three colors, getting the right color of mana can be a problem. For example, Llanowar Dead can give you black mana, but you must have black mana to play it in the first place. If you feel like you're having too many mana problems, try adding extra cards that can provide more than one kind of mana. Of course, that would mean you'd have to get rid of some of those precious Zombies![1]