void Update()
{
var elapsed = Time.time - StartTime;
var elapsedPct = elapsed / Ground.Map.RuneTimeUntilDangerous;
Ground.RuneGlowRenderer.color = new Color(1f, 1f, 1f, elapsedPct);
// Destroy this script.
if ((elapsedPct) > 1f)
{
Ground.DangerifyRune();
Destroy(this);
}
}