If you want some fun with fire, try the following macro when at full stacks for both Fire blast and phoenix flames.
#showtooltip
/castsequence reset=25, Combustion, Phoenix Flames, Fire Blast, Pyroblast, Phoenix Flames, Fire Blast, Pyroblast, Phoenix Flames, Fire Blast, Pyroblast, Phoenix Flames, Fire Blast, Pyroblast, Phoenix Flames, Fire Blast, Pyroblast
You still need to get used to casting manually for proper maintaining a dps rotation during long fights, but its great for deleting stuff.