The Ashes of Time
Shard of the Sun
Pelorian Relic (?)
The Shard of the Sun is a Dragon Shard shaped like a sunburst that continuously emits a warm light equivalent to a daylight spell heightened to 5th level. On command, 3 times per day, it will blasts forth 4 beams of light (as per searing light) that does 10D6 to undead, 5d6 to constructs or objects, 5d8 to other creatures, and 10d8 to undead creatures particularly susceptible to bright light.
This shard can only be destroyed if bathed in the light of a selenehelion. A selenehelion occurs when both the Sun and the eclipsed Moon can be observed at the same time. This can only happen just before sunset or just after sunrise, and both bodies will appear just above the horizon at nearly opposite points in the sky. Holding the Shard in the light of the eclipsed Moon while sheltering it from the Sun will cause it to crack rendering it powerless.