The Sibsig Ceremony

The trade at the center is brutal in the way black loves: you pay less for the creature, and then you don't get to keep it. Every creature you cast lands cheaper, but the moment it resolves it dies, leaving a 2/2 Zombie Druid behind in its place. The reduction is real savings; the destruction is the tax that claws it back. What that does to deckbuilding is invert the usual logic of casting creatures. A vanilla body is worthless here, because you paid to cast it and got a smaller replacement in return. The engine only makes sense when the creature does its work on the way through: a value trigger on arrival, a die trigger, a departure payoff. You are not casting creatures to have them; you are casting them to fire the effect and bank a token, converting a stream of one-shot triggers into a growing Zombie Druid line. That reframes any creature with a strong arrival ability as a body you spend rather than keep, and it makes the death-matters axis load-bearing rather than incidental. The clause that draws the line is its specificity: the destruction only fires on creatures you cast, so anything that reaches the battlefield another way (tokens, reanimation, copy effects, blink) sidesteps the ceremony entirely and stays put. Your permanent board gets built through the side door, because the front door only ever hands back Zombies.