Using creature that either never die, or become stronger after death, The Sacrifical Deck gets it's power from the bodies of others.
The 'Sacrifices' are the Tenacious dead, for they can be killed repeatedly, then brought back from the grave within the same round, allowing it to be reused as long as the mana holds, out. Dragon Eggs are considered useless, unless they are forced to 'hatched'. Thus using it as a sacrifice makes it a usable creature in both powering a spell or ability, AND gaining a 2/2 flying/attack boosting dragon.
Blood Bairn uses the sacrifice of the dead and eggs to boost her attack and defense power to ridiculous levels. For the Desecration Demon, it acts as a sacrifical generator for the opposing side. Even if the opponent is a token generator, it can still deplete the enemy of its troops.
The Undercity Informer gives the deck an alternative way of hurting an opponent, as it can use the tenatious dead as ammunition for dealing out milling damage. Liliana of the Dark Realms gives the deck the ability to mana ramp, as well as deal out a limited from of control on the field.
Alter's Reap gives the deck the ability to card ramp, allowing access to additional lands and other useful cards that much sooner. Barrage of Expendables allows me to use the various expendables to dish out damage on need-to-kill creatures, as well as deal damage to players.
Doom Blades are self explanatory, though Dreadbore, while a sorcery, is VERY useful for taking out the bane of many: Plainswalkers.
Grim Return is useful for retreaving used Dragon Eggs, or for gaining useful creatures killed with the aformentioned abilites.
The Strionic Resonator is interesting, as it allows me to copy any sacrificed-boosted permanent ability used for 2 mana, which comes in handy where many of the abilities in mind may cost at least 3 or more in mana.
Thoughts?