Dragons, Starting 12:00 PM Friday, April 22, 2016, through Sunday, April 24, 2016, we will hold a 2X EXP and Skill Event! Now's your chance to earn twice the experience points when you play Nine Dragons this weekend! Event Duration: April 22, 2016 12:00 PM - April 24, 2016 11:59 PM Pacific
exp card only boost the base exp. It doesnt stack on top of one another. For example, if you get .25 per mob, x2 event with x3 card only gives you .5 + .75. = 1.25 per mob. If it is stacked, it would be .5 x 3= 1.5 per mob.