Ramp, deck-thinning, and extra power for the low price of two mana make Sword of the Animist a must-have
You start the game with seven cards in your opening hand, and you get to draw one more each turn
These are the free sacrifice outlets in this deck: Altar of Dementia Carrion Feeder Cartel Aristocrat Spawning Pit Viscera Seer Priest of Forgotten Gods (must tap Priest of Forgotten Gods but should probably be done at sorcery speed unless you have an instant to use with the 2 extra black mana the ability will give you) While these are probably your best targets to sacrifice a creature, there are a couple more
Electrodominance is a Volcanic Geyser that lets you play something from your hand for free
A 4/3 creature with haste that comes with a free exile effect is Solitude ratings, so be sure you use that aspect well
However, with no protection of her own, shell be a lightning rod for removal