ele shaman t8 4 set bonus question

[sobaken007]

"4 pieces: Your critical strikes from Lightning Bolt cause the target to take nature damage equal to 8% of the Lightning Bolt's damage over 4 sec."

Does it work like mage's ignite so dot damage can stack up after more and more crits?

[sobaken007]

thanks for all responses
tested it myself, had to spent some points in vote shop
answer is yes, tested on 5.6 resto shaman, dot went from 300 to 600 after some crits in a row
but im not sure timings, if dot damage ticks before bolt lands