Remédio da Natureza (52) - Makes your
Curar Ajudante heal 15% more of your pet's health, which is a ~42% increase. This is a significant increase, which just means your pet can tank more enemies at once while leveling. This is not exactly a problem to begin with though, and will only be really noticeable if you are doing huge pulls while leveling.
Munição Disruptiva (54) - You get 10 focus back from successfully dispelling.
Armadilhas Aprimoradas (56) - Reduces the cooldown of your
Armadilha Congelante and
Armadilha de Piche by 5 seconds.
Tiro Mortal Aprimorado (58) - Increases
Tiro Mortal's crit damage by 25%. This is a nice DPS upgrade, but just means Kill Shot will hit harder sometimes.