this happened to me before in a 1v1 in an arena, he was 20% (a warrior) so i shadowburned but he got up to 25% so shadowburn didnt do anything and i died
i cried
rogue build i go for:
agility>mastery>crit>haste
my haste is around 11% i think because faster energy regeneration along with slice and dice is nice
but i always go agility but if i cant then i'll go mastery/crit