do legendary effects stack?

[chengsta]

for example, the effect "movement skills have -15% cooldown time." if i have that on 2 pieces of gear, will that be -30%? or still just -15%?

[Calm Koala]

Legendary effects are bound to specific grar pieces. Swift Wings of Hermesal is a chest armor and since you can't equip more than 1 the movement skill cooldown reduction effect can't stack.
Your best bet is to pair that chest armor with Wings of Harmony legendary gloves and craft attack speed to further reduce the cooldown.

[George Foreman? Nope Chuck Testa]

Originally posted by Calm Koala:

Legendary effects are bound to specific grar pieces. Swift Wings of Hermesal is a chest armor and since you can't equip more than 1 the movement skill cooldown reduction effect can't stack.
Your best bet is to pair that chest armor with Wings of Harmony legendary gloves and craft attack speed to further reduce the cooldown.

what about that upgrade on knight that counts the chest piece twice?

[Calm Koala]

Originally posted by Angela Lansbury? nope Chuck Test:

what about that upgrade on knight that counts the chest piece twice?

Tested it on Twitching Warp ancestral skill and the cooldown remained the same. It increased the stats (base, magic and so on), but not the legendary effect itself.

[Peredur]

To complete the answer from Calm Koala, a legendary effect can only appear on a specific type of item (an effect on gloves can only appears on gloves, an effect on capes can only appear on capes, etc) but because of rings it's possible to wear two items with the same legendary effect.
In that case, the effect is only applied once (the second occurence is ignored).

To be noted a legendary effect can often be strenghtened by reinforcing the item granting it.