I went to help some guildies do SoD in Kaladim when I fired off this baby. According to the description, regardless of if there are any effects on you, it will hit for 614-1023 AE damage. Then, if any effects are dispelled it will do an additional AE for each one removed.
So, how is it, according to my screenshot, I hit a group of mobs for 1069-1326 critical damage, then Wound was removed, and only hit 647-769 critical damage. If it's going to crit that second time, it needs to do at least 1024.
BTW, they need to make it remove those buffs that are not removable if it's going to be raid worthy, and remain on a 3 minute recast.