
Originally Posted by
Puupi
Here are my notes about the legendary meta gem after my first raid wearing it:
1. The meta gem procs from ALL NON-DAMAGING spells (including Ghost Wolf, Earthliving Weapon), excluding totems (as far as I have noticed).
2. The meta gem does NOT proc from HoT ticks, HST ticks, Earth Shield hits etc. It procs from direct spell casts.
3. The proc is 4 seconds, so it's rather short.
4. Shamans don't have a good 1 second GCD spammable medium to high mana cost ability to cheese that proc with (like Power Word: Shield, Renew, Rejuvenation, Surging Mist/Glyphed Uplift, Spinning Crane Kick). I think Paladins have this issue as well.
5. Since the meta gem procs from spell casts (and not randomly from HoT ticks etc.), you should push your "hard cast- cast time" below 2 seconds to effectively get 2 free spellcasts on a proc. By this I mean that HW/GHW/CH cast time should be 1.9 or below. You need to be chaincasting to fit those two spells in the 4 second window.
6. You can get a sufficient cast time with _7613_ haste rating (AS+raidhaste), which is a breakpoint for Healing Rain, too. In addition, at that amount of haste, your GCD is quite close to 1 second.
7. If you suddenly get the meta proc and you have queued Riptide for the next GCD, you can fit Riptide+GHW(HS)+GHW(HS) in that 4 second window, too. If you get the proc from Riptide, you can fit 2x GHW/HS + an instant (ES/UE/Totem).
8. As for now, I strongly recommend getting that 7613 haste rating, if you have good enough gear to do that. If you have 4pc t15 (which I unfortunately don't), 2x RPPM trinkets and the legendary meta gem - I believe this haste threshold is a no-brainer. You might even be able to reach higher haste levels without gimping your mana efficiency too much (probably at 530 ilvl or so).