Well this is my first serius guide here, the other one was just a derp one i did when i was like lvl 10. Sry if my english isnt the best since Im from Sweden. :)

Pros Good harras early game, Nice escape, Good gapcloser, Can evolve spells with ult-passive, Almost no CD on the op Q, ITS SO OP ITS SEEMS "BUGGED"
Cons Using ALOT of mana, Consantly needs bluebuff, No damaging ultimate Really, squishy early