The Sphinx of Valor's Patience
The Sphinx of Valor (D&D 5e, Monster Manual) runs AC 17 and 199 hit points, with a 60-foot fly speed. On the numbers it is an endurance fight. It does not need to win fast because it can afford to lose slowly, trading altitude and position while the party spends resources trying to pin something that never has to land.
Two details reward reading the stat block. It is immune to the charmed and frightened conditions, so every save-or-suck spell aimed at those effects is a wasted turn and a wasted slot. And it has legendary actions and lair options that let it disengage and reposition on the party’s initiative, meaning the melee line rarely gets the clean adjacency it wants. Left alone, the encounter drifts toward attrition, which favors the Sphinx.
The fix is a clock. Impose an external deadline (a ritual completing, a portal closing, a hostage’s failing save) and the math inverts. Now the party cannot afford to grind, and the Sphinx’s evasive flight becomes the thing costing them the fight instead of winning it.
At the table: Put a visible ten-round countdown on the table tied to a collapsing exit, and let the Sphinx spend its fly speed stalling toward turn ten.
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- The Seed Is a Trap You Set for Yourself
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