Nine collected pieces form a constantly primed disk that must touch a storm god or receive god-tier storm magic inside the stairwell circle.
The party completes all nine pieces after following the tenth floor's most difficult route. Hold Steady must continuously infuse the assembled puzzle or it loses readiness.
Activation requires physical contact with a storm god or a god-tier storm spell, and the disk must remain within the stairwell circle. Those combined constraints force the vulnerable crawlers to lure a deity directly onto the exit.
Dodola is summoned inside Chaco's containment with the puzzle. It shatters under divine storm energy and produces a lightning key mote that opens the stair when the shell ends.
A round nine-piece disk pulsing from red to blue while floating inside a stairwell circle.
The puzzle is the final tenth-floor gate and the reason a storm deity must be brought into lethal proximity.