mtg war of the spark cards - 2X Wanderer - the - Near Mint - Unplayed - MAGIC CARD That creature is a Vampire in addition to its other types. Magic THE Gathering [181] WAR

Release the Gremlins : Sorcery, casting cost of X generic, X generic, and one red mana

There's also Kirri, Talented Sprout as a plant/treefolk typal commander, though the red in it color identity doesn't do much for you if treefolk creatures are your focus

Learn more If you plan to siphon life totals all the way to the finish line, the best Vampire Commanders MTG has ever seen are hands down the coolest way to pull it off

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

Then, when you crack the Memory Jar, your opponent takes a bunch of damage from Megrim from discarding cards, and you simply draw into more tutors, Memory Jars, and fast mana