I took a macro from Fuzzyboy:

Code:
/castsequence reset=target/combat flame shock, lava burst, null
 /castrandom lava burst, lava burst, chain lightning, lightning bolt
and added it to what I was doing

Code:
#showtooltip
/use 13
/use 14
/cast [harm] Elemental Mastery
to get

Code:
#showtooltip
/use 13
/use 14
/cast  [harm] Elemental Mastery
/castsequence reset=target/combat flame shock, lava burst, null
/castrandom lava burst, lava burst, chain lightning, lightning bolt
It don't work. Now I get stuck at my trinkets or EM. One guy did Flame Shock, once. Any clues? Is this too much for one macro?