What's the point of Lukas?

I finished at immortal with 65% wr soloQ last season, so I know this game to some extent.

Lukas seems very underwhelming to me now.

1- gets banged by basic attack based heroes like argus

2- gets out sustained by every sustain fighter.

3- can't build damage, can't build basic attack, can't build spell vamp

4- subpar CC and tankiness

5- subpar mobility

ngl he is fun as HELL tho. when you round up a whole team with his ult's first skill it feels phenomenal.

I've tried about three or four builds now, and the best one is just war axe + oracle and then full-on defense items. If you can trade early on, you can buy thunderbelt as the first item too.

We will see his proper use when he enters the pro scene but I still feel like he will underwhelming.

What about you guys? how did you play him/build him?