This requires a macro extender like Macro Toolkit which can be found here…Fandom
These work as of 5.4
updated 3/2/14
Based off World of Warcraft
Bread and butter
#showtooltip
/castsequence reset=0.3 0,0,Combustion
/castsequence reset=0.3 0,Inferno Blast
/castsequence reset=target Scorch,Living Bomb,Fireball,Fireball,Fireball
/use [combat]Mirror Image
/use [combat]Brilliant Mana Gem
/use [combat]13
/use [combat]14
/startattack