The Worldgorger Dragon combo reborn in Vintage, the only format where it's still legal (Sure there is Commander but that's a whole different game). This is a combo deck and while there are two methods to win, it really comes down to two key cards. Worldgorger Dragon and Animate Dead.

The idea is to get your Worldgorger Dragon into your graveyard, either with or without Shivan Hellkite. You do this via Entomb, and there are two tutors in the deck to help you find Entomb if you need it. Ideally you would have either a Animate Dead, Dance of the Dead or Necromancy in your hand at this point which you would cast to bring the Worldgorger dragon back from the dead.

Once the Dragon comes back everything you control is exiled, including Animate Dead. In turn the Dragon dies and goes back to the graveyard and everything that was exiled comes back, untapped, including the Animate Dead which you can attach to the Dragon again. Thus you get your infinate mana combo which you can dump into Shivan Hellkite to burn your opponent, or alternatively Ghitu Fire or Volcanic Geyser. If you can't burn your opponent, then you'll want to either attack them directly or go to game 2 and swap in the Ambassador so you can deck them instead.

This deck has power, but only partial power and that's the way it works best because you really need Black and Red and other colors don't help if you want to win on turn 1 or 2. The lands reflect this as well as all are able to produce at least Red & Black and come into play untapped (Very important for Worldgorger).

Your sideboard is entirely anti-control, because the biggest threat to this deck is something to stop the combo. A form of protection would be the second hardest thing for this deck to deal with. You have Pact of Negation to protect your combo, Duress to neuter your opponent's hand, Mental Misstep to act as a free-ish situational counter and the already mentioned Ambassador for the alternate win condition.

Like most combo decks, this is not a deck for the long haul. You want to win in the first couple turns, and the deck can do it. But it's not perfect, since this deck was originally conceived there have been a number of cards created that can counter this deck, and since the deck works similar to Dredge... Quite a few of the anti-Dredge cards people sideboard will work against it.

Still it's one of the most fun combos in Magic, and everyone needs at least one combo gimmick deck in their collection.