why? why? Sion was the obvious choice since he is undead! In the first few months of me playing LOL i actually thought that sion was already had a pentakill skin, thinking it was the 4 undead with sona tagging along and i was surprised when i found out he wasnt

Macho Man Randy Savage has joined the league.....

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.

The roles.

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.

THere is no ADC what

I always thought olaf would make a good drummer for pentakill, seeing as he's one of the only people in the league that dual wields weapons that makes sense with it. Draven, if anyone pays attention to the lore, is too busy with his bloodbath crowd pleaser and the league to bother with anything else, and kat... sona likes being the only girl in the band. Akali wouldn't because of her nature, same with shen, MF would shoot the drums, shaco has too much of a criminal record (and skins), sion wields A SINGLE BLADE (hurr durr im gonna drum with one stick durr), same with trundle...

really, olaf is the only one for the job. good choice to riot and good prediction for me

This was a dumb decision Riot. Pentakill needed a ranged adc member. Should have been Draven so he could twirl his drumsticks.

Another goodie
Yorik and sona make a stupidly strong bot lane
Morde top
Karthus mid
Olaf jungle


...Lets us not forget that karthus is an incredible jungler, though prone to invade, with fast clears and strong ganks! That lets you morde mid and olaf top just in case of some counterpicking by the enemy. Yorik can also jungle relatively well.

My love for you is like a truck berseerrrkerrr!

Get out, junior member. You have no place here, we've wanted Pentakill Olaf for years.

Drimstick's faces look just like Rick's Terror Mask from the remake of Splatterhouse...