Dm was somewhat correct when he said to drop the vampire stiletto. It is a great card, and can still fit in this deck.
But he was correct in dropping the Drain lives to add more Liquid Shadow. Liquid shadow on an unbuffed voodoo doll will deal 2 damage a turn, one through the loss of life from a poisoned voodoo, and one from the poison from the voodoo's passive ability. The drain lives will not have enough quanta to do well in this this deck.
However, another modification you can do to this deck is to drop the black holes. The black holes would be mainly anti-rainbow decks, however most rainbow decks will be able to outspeed this deck. This is why I would drop the three black holes and a liquid shadow and add 2 gravity pulls, along with 2 nightfall. The added nightfall allows the voodoo dolls that were not accelerated to deal damage too. It also gives the voodoo dolls an extra turn of life, as long as it is not destroyed. The gravity pulls have a twofold purpose, if you're being outrushed you can use it on an unaccelled voodoo doll and deal damage. Later in the game, you can use the gravity pull on an annoying enemy creature such as Arctic Squid.
Here is a sample deck with the changes I recommended:
Hover over cards for details, click for permalink
55t 55t 562 562 562 562 562 562 5uq 5uq 5uu 5uu 5uu 5v0 5v0 5v0 5v0 5v0 5v0 606 606 606 606 606 606 606 606 606 606 606 8pl
