I have yet to seem to find any actual usage for Zen Meditation so far. I've killed the first four bosses, and everything I tried to use Zen Meditation on wasn't actually working for the raid (charges weren't being used up). So far it seems better used as a self cooldown during periods of intense aoe. Maybe I'm just missing something obvious though? Has anyone been able to find any applicable usage for Zen Meditation as a Raid Cooldown so far?