Thank you for your help. You might have pointed the right direction but it's not that yet .
It's casting EM just after the Lava Burst but I just fell we have something here .

OC the other solution is as you say keep it separate but in any case since it's a every 3m macro that takes few seconds to cast, /click might not even be worth it.

If you have any more ideas I still want to go for it