This is theory, but I have a feeling this combo may be OP on some specs
Air/Fire
Air/Intelligence
On a warrior with Fast Hands for example. The warrior will be able to Proc Air, Fire, and Intelligence pretty much all the time immediately off cooldown. It seems like this would be a mandatory sigil setup for a glass warrior, because of how good it could be.
Options like this aren’t even available to the engineer and elementalist, but this is a separate concern.
Sylvari Elementalist – Mystree Duskbloom (Lv 80)
Norn Guardian – Aurora Lustyr (Lv 80)
Mia A Shadows Glow – Human Thief (Lv 80)