Sangrophage

The price of a 3/3 for two black mana is paid every turn, not once at casting: each upkeep asks you to either bleed two life or watch the creature stay tapped, unable to attack or block. This is the old undercosted-beater design template, the same accounting that runs through Juzám Djinn and the bloodthirsty Phyrexian creatures of that era, but tuned for aggression rather than chump-value. The drawback only stings on defense and only mounts over a long game, which is exactly the game an aggressive black deck is trying to avoid. Played to plan, you swing, the upkeep tax is a rounding error against the life total of an opponent who will be dead before the bleeding adds up, and the body trades up against most two-drops it meets. The friction arrives when the race tightens or the clock slips: now every turn it survives, it taxes you in the same currency your opponent is trying to spend, and a tapped 3/3 in front of an alpha strike is a 3/3 that does nothing. The card is honest about what it is. It demands you keep attacking, and punishes the deck that drew it into a stall.