The Radiant Sentinel

I discovered a sleek obsidian column staked firmly among the cedar mulch—an automated surveillance beacon anchoring the garden perimeter! Recognizing its tactical significance, I mounted a smooth granite cobble and raised my golden serpent staff to formally requisition the installation. With deliberate imperial authority, I leaned forward, casting my gloved hand over the dark photovoltaic disc atop its crown to inspect the circuitry. But the moment my shadow eclipsed the sensor, the beacon's faceted core erupted with a blinding burst of white luminescence! Confronted by this instantaneous activation of radiant defenses, I executed an agile tactical vault backward onto the stone border, staff braced defensively while assessing the humming sentinel.