Shrine of Loyal Legions

The reward for being mono-white, and one of a cycle that ties its payoff to commitment in a single color. Each white spell you cast and each of your upkeeps loads a counter, and the longer it sits, the larger the army it cashes out into. The structure is a deliberate tension between patience and tempo: every turn you leave it on the battlefield is another Myr in the eventual payload, but it does nothing to affect the board until you spend three mana and tap it to detonate. That delay is the cost the design charges for an explosive endgame. The activation has no speed restriction, so the detonation is an instant-speed play: you can hold it through an opponent's turn and crack it at the end step, walling against sorcery-speed sweepers and forcing them to commit removal before they know whether the artifact will live to fire. The opponent sees the counters stacking and knows roughly what is coming, which makes the timing of the swing the real decision rather than the trigger itself. What makes it more than a token generator is the texture it adds to a white deck's curve: it converts spells you were casting anyway into a second, deferred resource, rewarding a build dense in cheap white plays rather than one that splashes white at the edges. It is the most aggressive member of its cycle, trading the incremental value of its siblings for a single overwhelming swing, and the one that most clearly asks you to build around it.