Consulate Surveillance
White has been printing damage-prevention locks since Story Circle: pay into an effect keyed to color, and one channel of the board simply stops working against you. This one keys off a stockpile instead. It arrives with four counters, enough for two activations off the top, and each one prevents all damage from a single source of your choice for the turn at instant speed. The arithmetic is the whole engine: two free uses on entry, then the rest of the build (the vehicles, the refineries, the energy dorks) has to keep feeding the meter, because the card produces nothing beyond that opening reserve. What makes the design unusual is that it converts a flexible currency into a hard wall against one threat per activation: a fog narrowed to a single source rather than the whole board. Because it names a source instead of a target, it cuts through hexproof and shroud without trouble; the real constraint is the count, since two activations cover two attackers and no more. That is the tension the card lives in. The ceiling is a soft prison against a single overgrown threat, chumped for two energy a turn as long as the well holds. The floor is a dead enchantment the moment the energy runs dry and nothing on the battlefield is left to refill it.
