Evelynn (also known as Eve) is one of the toughest asassins to see and run away from. Eve uses her passive to gank and can easily gank and kill while you're at it.

Eve should top early game until she reaches lv 5, that is the beginning of her ganking journey. it is almost impossible to run away in the jungle even if you carry both flash and ghost once she has the slow from the sceptor thingy.

Pros
-Ganking master
-Almost impossible to kill when she is running away
-can spam abilities, if you are fed your q can take 33% of their max health(happened 1 time with me)

Cons
-Fairly squishy
-Can be seen by vision wards or oracles or even from bushes (late game stuff, usually it end before that)

Eve can stalk people fairly easily and is the best ganker in my opinion. Make sure you don't use your w or you will give yourself away.

Eve is most effective scouting, flanking and coming from behind (lowers their morale). Eve also secures kills and distracts enemies. However if you must initiate do so at your own risk, if you really do I urge you to initiate with your ult which will give you enough shield to allow the rest of your team to follow through.

From early on eve will already have no probs farming with q. The only worrying thing is your mana so you might take a bit of mana though it won't affect you late game. (Archangels)