Question about facets. (Herald -> Legendary dragon stance)

I just need some clarification on the facet game mechanics; They don't work the same way signets does right, they give no bonus for just being slotted you actually have to have them activated?

And I can only have a max of 3 active without draining the energy bar used for skills, right? And if it drains to 0 the facets are no longer active?

You use the skill once to turn them on... While they are on, they pulse their associated boon and cause an amount of energy degeneration. You can then use the skill again for an active benefit which will disable the skill and put it on cooldown. This is also the only way to turn off a facet other than legend swapping or running out of energy.

If your energy hits zero, all facets turn off and are put on a soft-cooldown of couple seconds.

You can have more than 3 active at once, but it will affect your energy regeneration... Rev's have a natural energy regen of +5 per second and all facets have an associated upkeep cost-- you can spend a maximum of 10 upkeep points at the same time (for -5 energy drain per second.)

Ah sweet, thanks for confirming how they work :) really helpful!