Pest Summoning
The two 1/1s that an aristocrats deck runs not for their bodies but for their exits. The death trigger stapled to each Pest reframes what the tokens are: disposable fuel that repays a point of life when it leaves, so every sacrifice outlet, blocker trade, and board wipe converts spent bodies into incremental lifegain. That payout stacks in one direction only (you gain, the opponent does not lose), which keeps the card an attrition engine rather than a clock, and matters more than the raw rate. Two vanilla-sized tokens for the cost is unremarkable on the turn it resolves; the value is spread across the several turns after, which is the pace an engine deck wants. What completes the design is the Lesson typing. Rather than occupying a fixed maindeck slot, it sits in a Learn-accessible pool that a spell can reach for on demand, letting the deck treat it as a tutorable resource pulled in exactly when the sacrifice engine is online instead of a card drawn at random. The hybrid pips widen the shells it fits, promising both colors' payoffs whether the deck leans black, green, or genuinely both. It does very little the moment it lands and quite a lot over the turns that follow, which is precisely the shape of a card built to keep an incremental sacrifice loop fed.
