Sparks have a set despawn timer now, something like 90 seconds after spawning whether dead or alive they despawn their buff thing on the ground or the mob itself. Basically the way you do it is like dis:
One spark spawns, you get vortexed, everyone moves to the side where that spark is except the MT of course after the vortex. Spark gets killed when it reaches melee range, bloodlust goes up as soon as that spark dies. DK grips the second spark onto your first spark, that spark dies. You get him to 50% before his second vortex. If you do not reach 50% before the second vortex you will not beat the 6 minute timer. Continue DPSing in the air. There is probably another spark floating around now that you can snag out of the air for a boost to DPS in p2, kill scions/lords etc with that 2 stack from p1 that should still be up.
XI Wiki



