Originally Posted by ROACH234
should have been draven, if only so that people could play full pentakill team and still be viable in the meta.
This comming from a Junior... Sorry but no just no. This team is perfectly viable and does not need an AD carry when Morde can simply apply his ultimate to the enemy teams AD carry with some help from the rest of his team, secure the kill on the enemy AD carry and attain a ghost of said AD carry turning a 5v5 team fight into a 4v6 team fight where Mordes team now has an AD carry. Not to mention Olaf is tanky DPS and really the current meta for LoL is, if you're tanky, have good dps the chances are, you will win.
Olaf - Jungle (could Draven jungle and be a strong jungler, the answer is no)
Sona - Bottom
Yorick - Solo Top
Karthus - Mid
Morde - Bottom (once he hits level 6 your issue of no AD carry will be solved)
However this isn't the only viable way to play this team composition.
If you felt like it, I do believe it would be possible to swap Morde and Karthus and maybe (not quite sure as I've never attempted to jungle Yorick before) swap Olaf into the solo lane and jungle with Yorick. Not saying you can swap Olaf and Yorick around, but it might be possible.