With Bloodthirsty Conqueror, you can add more redundancy to this life drain combo
Late in the game, you can cast this zombie god and sacrifice your entire board to mass-trigger Blood Artist and its compatriots
House: Success depends on forethought, dispassionate calculation of probabilities, accounting for every stray variable. For dice-rolling cards in MTG, were stacking RNG on top of the 99-card singleton deck RNG
Heck, even if grabs whatever Overrun effect on a Creature you've got near the top in your tokens deck, or pulls another Power buff in your Elves Kindred deck, it'll almost certainly do excellent work
Team her up with legends like Anje, Maid of Dishonor or Vito, Thorn of the Dusk Rose, and suddenly your reanimated vampires refuse to leave the party
Some portion of the creature suite of the deck needs to change to better suit what youre trying to do