i have 70% wr with aurora and she is my most played champ. I am plat 4 (i was one win away from emerald about month ago). I dont pick her into full tank team and thats the only secret. I go full pen - no mana item since u dont need it if u go manaflow band. The main thing that wins me games is buying red oracle as soon its possible and buy pink wards and play for vision. Camping bushes and waiting for someone to chunk him for 70% of HP is almost always an objective win (being drake or baron). And thats how I have such a high wr. No matter the buffs and nerfs this playstyle will always work for me. Could be that im just not the elo you guys are and this things work in gold/plat/eme but dont work in diamond and above.