Witch's Cauldron

Sacrifice outlets that convert a dying creature into cards are old news; what this one adds is the durability of an artifact body that survives the board wipes killing off the creatures you feed it. The one-mana entry cost is the appeal: it lands early and sits back, waiting for a sacrifice theme to fill up around it, and because it lives on an artifact rather than a creature, it dodges the removal opponents aim at your bombs. The activation is where the restraint lives. It taps, so it draws one card per turn at most, and the activation cost stacks two mana on top of the sacrifice, which keeps it from becoming a free machine-gun outlet the way tap-free, no-mana versions of this effect can be. That combination (hard to kill, cheap to deploy, deliberately throttled per activation) marks it as a value engine built for the long game rather than a combo enabler. It is a card-advantage tool for a deck that already expects its creatures to die, turning tokens and expendable bodies into a steady drip of cards and life while the artifact itself stays clear of the removal that would otherwise unravel the plan.