Evolved Sleeper

A one-drop that never stops asking for mana. The design problem here is old: a black one-drop trades well early but goes dead once the board stabilizes and the game turns into a topdeck war. This answers it by folding a mana sink into the body itself, gated so tightly that each stage only unlocks the next. The first activation is cheap and merely keeps the creature relevant in combat; the second is where the card commits, planting a deathtouch counter as it adds the Phyrexian type and making a 3/3 that trades up against almost anything; the third finally opens the draw-and-lose-life loop, but only after the previous two upgrades have been paid for. That sequential lock does the load-bearing work: you cannot buy the card-advantage engine on turn one, and you cannot skip to it, so the payoff scales with how flooded you actually are rather than how flooded you fear you might be. The lineage runs through every mana-sink one-drop black has printed to fight the topdeck war, but most of those either lived on a land or asked you to already have another creature in play to feed. Putting the entire escalation on a single 1/1 means the sink and the threat are the same card, which is why it survives the early trade and still matters when the mana finally comes.