Creatures:
4 Lim-Dul's Paladin-Dûl’s Paladin : A consistent 4 damage, usually. If not, it becomes a 6/6 trample for 4 mana.
1 Vampiric Dragon : If the game gets this far, this will make sure you are ahead on life, and can easily sway the game.

Enchantments:
4 Reckless Assault : Great way to finish off the opponent, or kill pesky creatures.
4 Smoldering Tar : Creature control, and its never dead. Can finish the opponent off in a deadlock.

Spells:
4 Fire Covenant : Can hurry the game up by dealing damage to both players as the same time, and can also kill lots of creatures.
4 Delirium : Delays damage to you by removing creatures from combat, and also lowers the opponents health low enough so that you can fire covenant for the kill.
4 Backlash : Basically the same as Delirium, with a few different tricks.
4 Terminate : Good creature kill without losing life, if you are already low on life.
4 Phyrexian Purge : An alternate to fire covenant for bigger creatures, and allows you to save the covenants for the kill.
4 Kaervek’s Purge : Kills a creature, and deals damage to a player.