Honden of Night's Reach

The discard member of a five-Shrine family whose payoffs all scale off the same count: every Shrine you control widens the bite, so the engine reads as one card per upkeep only when the rest of the family hasn't shown up yet. Get three or four Shrines down and an opponent is shedding three or four cards every turn, faster than most decks can rebuild. Because it's legendary, you can't stack copies; the multiplier comes from breadth across the cycle, not depth in this one slot, and that demand for a real Shrine commitment is what pushes it toward a dedicated build rather than a casual include.

The upkeep timing is the constraint that defines it, and it cuts both ways. Tying the trigger to the start of your turn hands the opponent a full cycle to spend or reload whatever they drew before the next discard lands, and it gives them a clean escape hatch: a player who empties their grip on their own turn arrives at your upkeep with nothing to lose, so the engine sputters against an empty hand exactly the way a one-shot discard spell does. What it sells in return is repetition. A board an opponent has to rebuild into turn after turn punishes the hoarder above all, the player sitting on counterspells and answers waiting for a window. Against a deck that dumps fast, it is the slowest of the five Shrines to earn its keep.