I have noticed that some players have more than one genie ....my question is, is it absolutely necessary an what is the limit of genie's to have? Yep, I know, I am a terrible genie NOOB!!
In basics,you can have all you need on one optional genie.From advenced look its a bit diferent. Str,dex and magic genies...depend on skills you use on them and for what purpose. Is it 1v1..is it TW/mass pk...is it vs certain class.Some players change their gamestyle/tactic in those. And with new tactic or need,come and (possible) new skills. So few genies (2-3) to fill the role in those diferent tactics,or needs are nice to have in invertory.There is a nice genie guide here that says it pretty much all considering skills. Its on you to learn what,how and when to use on your class.
There's mass PK genies...1v1 genies...and PVE genies. Yesterday I made a 128/150 LP genie