Bowmanship (Guild Marks thingy.)

[Xatsh]

When you use abilities on other classes they are weaker, the affinity traits increase the abilities potency by 10%.

This will increase potency, reduce the cooldown/recast timers, Speed up casting, and increase duration.

Basically in the end it increases the ability/spell's potency by 10% in everyway.

They cap at 100 affinity though, on your main class you have 100 affinity for that class. Meaning like say if you are on archer you have 100 archer affinity (meaning you are 100% archer) but if you say put quickstride on gladiator you are not at 100%. The affinity will reduce the cool-down by about 11 secs, and the duration of quick stride by about 3secs.