First was his understanding of the skill, {Warlock}.
From what he could tell, the most recent evolution was quite loaded with a ton of different sub abilities.
The most obvious one was the ease with which he could now process magic circles, his ability to analyse mana flow patterns, and of course, his mental processing.
Previously, he could split his mind to perform about five to six different things. Now, it was more than a dozen, perhaps closer to two dozen of he really put in the effort.
The increase was not only significant, it was also jarring.
If he had multiple arms and limbs, being able to control them all would not be an issue at all.
However, because he didn't have so many arms, this feature was going to benefit his spell, {Fallen Stars of Orion} the most.
Being able to split his mental processing to so many things also facilitated something very handy — double casting, and perhaps even triple casting of different attribute spells all at once.
