Skulltap

Sacrifice a creature, draw two: the trade looks even on paper, but the math only works when the creature was going to die anyway or had already paid for itself. That is the design tension the card lives inside. Set it beside Costly Plunder, which buys the same two cards off an artifact or creature for the same two mana: this one narrows the fodder to creatures only, betting that black decks will always have a body worth converting. The real fuel is a creature that wants to die: a token, a depleted attacker, a creature with a death trigger that fires on the way to the graveyard. In that context the sacrifice clause stops being a cost and becomes a second payoff, turning a single permanent into both a battlefield event and a card-advantage spell. Strip that synergy away and you are spending a creature plus two mana for two cards, a rate that rarely justifies the slot. The card asks a specific question of the deck around it: do you have something that profits from dying? Where the answer is yes, the conversion is close to free; where it is no, the creature requirement is dead weight that plain draw spells without the sacrifice clause sidestep entirely.