Baleful Ammit

A 4/3 with lifelink for sits above the curve for a black three-drop, so the design attaches a tax that lands on your own side of the board: the enters trigger forces a -1/-1 counter onto a creature you control, and that counter is permanent, not a one-turn shrink. The obvious line is to eat the penalty on the Ammit itself and run out a 3/2 lifelinker, and often that is exactly what happens. But the counter is what the card is really built around. Aimed at a creature you already want in the graveyard, it becomes a sacrifice-adjacent death press; aimed at an undying creature that carries a +1/+1 counter, it cancels the buffer so the thing can die a second time; paired with any effect that relocates counters onto an opposing board, it turns into token removal. The body stalls the ground, the lifelink pulls you back into range, and the drawback arrives as a resource you have been handed rather than a fixed cost. It sits among the black creatures that come to the battlefield already half-paid-for, where the deckbuilding puzzle is not whether the downside stings but where you can point it until it stops being a downside at all.