I used to not care too much for this relic but with the nerf to Ancestor, this is now leaps and bounds better. Now you look at this and you see the granted skill, and of course +200% pet damage and +60% total pet speed are both great bonuses to have if you get hit, but those aren't even the main thing for me. They will give you pets a huge boost, but of course I'm still always trying to avoid getting hit. This procs often enough, but maybe your against a very hard hitting boss. I don't think risking death(trying to keep that counter at 0), is worth this buff and so for stronger enemies it kind of stays off.
The absolute best thing about this relic is the %OA. This is always up and now that I have 61% OA... I'm starting to forget what non critical hits looked like! My overall damage has gone way up. Things used to die in 2 seconds, now they die in 1(not mathematically tested).
Craft this relic cos' it's brilliant!