Facet on your merc?
 

Would that affect your main character attack? Like cold facet on your orb sorc's merc? would that affect your orb???? Do someone knowwww? so I have to test it.

No it wouldnt, see your merc is factored into PvP like an alternate player, so when eh attacks all his effects work for his enemy and your effects work for yours. The facet says -5 to enemy for that players enemy. It doesnt stack from everyone attacking on person. Thats like saying if you and your friend double team someone both your facets stack onto that one player.

they dont stack at all, they apply to his attacks only, never urs

Thank you very much.