The Toymaker's Trap

A guessing game weaponized. Most mind-game cards in Magic ask an opponent to name a card or a color and impose a flat penalty; this one narrows the field to five numbers and prices the wrong answer by whatever the opponent named, so a fearful low guess bleeds little while a bold high one costs dearly. That asymmetry hands the guesser their own puzzle. A correct guess always resolves the same way (it retires the enchantment, whatever number you hid), so the choice is not about forcing the sacrifice: any right answer does that equally. The real decision is how much to risk being wrong. Guess low and you cap your own bleed, but you cede the numbers a canny controller is likeliest to hide behind, since low is the obvious safe pick to name. Guess high and you might read past the bluff, but a miss costs you exactly the number you called. So the opponent is wagering life total against their read of whether you played it safe or played against the safe read. The elegance is the depletion mechanic. Each upkeep you must pick a number not yet chosen, so the pool shrinks and the opponent's odds climb turn over turn; by the fifth activation one number remains and the correct guess is forced, retiring the enchantment on schedule. That built-in expiration answers for the raw edge: it bleeds them and draws you a card at no cost, but only four times, and against steadily better odds. Hidden-information design that is load-bearing rather than flavor dressing, in a game that usually resolves everything on the stack.