The first screen Corey looked at was the screen that contained the basic clear rewards for his ascension to tier 2.
He had to choose between Toxic Familiar, Virulent Veil, Venomous Conjuration, Poison Bomb, Venomous Shield, and Miasmic Wind.
Just from the name, Toxic Familiar was an extremely useful skill that could be used in numerous ways.
In situations where there was no way for him to communicate with somebody, the skill could come in handy. Also, he could use the skill to spy on whomever he wished.
Although, the skill was not an offensive skill, it was still a skill that was extremely useful.
The next skill was Virulent Veil which was an offensive skill that used mist. From the description, the skill did not seem to possess a very high attack power, and Corey had a feeling that he could reciprocate the skill using his Fog Manipulation and Poison Manipulation which he already planned on choosing.