sounds like a castsequence macro (or RR feature in keyclone) is what you want. /castsequence death grip,,,, on toon 1, then /castsequence ,death grip,,, on toon 2, etc. lots of examples. I think theres a earth shock rotation (or maybe tremor totem rotation) macro in the wiki (http://www.dual-boxing.com/wiki/index.php/Macros ) thats easily adaptable...Not entirely reliable (susceptible to lag, and if you spam they all get on the same 'step' since if it fails (due to a CD) castsequence doesn't progress. So you might wanta reset=cooldown_of_dg. also [target=focustarget] et al would probably be helpful...

might behoove you to read the wow macro guide at wow wiki: http://www.wowwiki.com/Making_a_macro Since its unlikly that you will be able to find all the premade macro's you need.