Spell similer to Heroic strike

[Rexon100]

Spell model similer to Heroic strike

This is not a WoW model request i just want to know how hard is it to make a spell similer to the ones such as heroic strike/blood strike/plague strike/Cleave in that style like so it strikes through your target? (I mean a spell model)

http://www.wowhead.com/spell=78#modified-by

http://www.wowhead.com/spell=45902