As the spire fell on their bodies, some managed to cast a shield right above them–others ducked with their hands on their head, and yet the ones to survive weren't the magic casters, but those who'd lowered themselves with no defence above them but their fists. The shields had shattered the spire into many pieces, but it also crumbled under its weight and buried the mages and clerics at once. As for the rest, they suffered minor injuries with tons of rubble weighing above them.
Buried alive, their bodies were being squeezed like a pimple. The weight was too great, and those who'd managed to free themselves attempted to help; many more of them died from blood loss and other abrasive injuries.