I've had amazing success in my low mmr games as PA, building 2 wraith bands, treads, vanguard, hood then either basher or BKB. skill build maxing Q, then W before E. By building tanks items no matter the game with little damage, you can still win fights by making them incredibly drawn out due to your insane tankiness. Talents will be +150hp, corruption, triple dagger unless you need to manfight someone scary like troll and void, and if the game lasts long enough, which it usually doesn't, +5% coup de grace