Can someone recommend me a fun champ

You want a champ with a lot of sustain?

I'd try Vladimir, Mordekaiser, or Dr. Mundo my friend.

Illaoi sounds right up your ballpark

I like playing dps and DoT champs like Cass, Azir , Karthus, and Teemo. They're fun for me since there's always something to do

If the criteria is Sustain, Range, and damage, you might like .

Try , his passive is oddly good for sustaining lanes. could be a good option as well. otherwise I recommend Bit light on the sustain however.

Guys guys guys... he is asking for a FUN champ that has range/ sustain/ damage. Look no further than my friend.