Hidden Stockpile

The two halves of this enchantment feed each other in a closed circuit, and that self-reference is the whole reason it works. Revolt wants a permanent to leave the battlefield each turn; the sacrifice ability is the cheapest, most reliable way to satisfy it. Feed a Servo to the scry activation, and the end-step trigger replaces it with another Servo, so the loop costs you one mana and a card-selection peek per cycle while leaving you net even on board. Most token engines either generate bodies or convert them into effects; this one does both in a single permanent, with the sacrifice outlet manufacturing exactly the condition the token-maker needs to fire. That makes it a payoff and an enabler stacked into the same two-mana slot, which is why it slots so cleanly into aristocrats shells where the leaving-the-battlefield event is the actual currency. Anything else that wants permanents to die (a death-trigger drain, a sacrifice-for-value engine) gets fed for free by the chum line this card spins up on its own. The scry attached to the sacrifice cost is the quiet glue: it turns a board-neutral activation into incremental selection, smoothing draws turn after turn while the Servo factory keeps the revolt condition lit. Left alone, it does not threaten much, but it never stops doing a little, and a little every turn is what grinding decks are built on.