When paying the other day my beast master was down to one life had a belt of regeneration on but was in a poison gas cloud.  Now using the belt first I would heal two-hit points, Then take 2 damage from the poison gas cloud. However if the gas cloud damaged me first I would be dead.  So my question is which do I do first?

We ruled that basically whoever had initiative got their choice of which effect to apply first. However this resulted in my defeat as it was my opponents initiative. Now that I think about it though it seems like they could almost happen simultaneously you regenerate 2 you lose 2. Basically cancel one another out. This to me seems to be fair for both players, basically my belt is negated by he cloud, but I'm not defeated.

Should the op kits be in stores yet? As my FLGS doesn't have it. Although when I asked them about they kinda turned to one another and gruntly commented "that's another one we have to pay for". So I'm not sure if they are even going to or not.

 Also is there a list of stores doing op?