Maintenance for the week of October 7:
• PC/Mac: No maintenance – October 7
• Xbox: EU megaserver for maintenance – October 9, 2:00 UTC (October 8, 10:00PM EDT) - 16:00 UTC (12:00PM EDT)
There are special glyps for jewelry that increases spell damage. When it comes to spell crit you can increase it with mages guild skill "inner light" or light armor passive