The evolution of Balthazar's power is still not very clear for some players. I'll list what I can remember.
I think the rogue Balthazar's is one of the most interesting villains, especially why he demonstrates that "knowledge is power". In LS3, his deeds resemble something more like a powerful wizard style than the some sort of "former god of war". In Pof, more powered, he mounted a army and lead assaults, then resembling more a "god of war" pattern. Although in the dialogues in various parts of the balthazar lore is mentioned as strategist, then his mastery of tricks and magic may perhaps be seen as part of his "strategy" mastery as god of war.
Lets go, the starting point is him chained state in the mists.:
In "Heart of Volcano" history instance he demonstrated ease in manipulating magic, to the point of leaving Taimi perplexed.
Scanner: No—life—detected. Only—magic—energy—present.
Taimi: Nooooo...! Is the coast clear? Can I come down?
: There's a god and an Elder Dragon down here, but you're welcome to join.
Taimi: Whoa. Hotter down here. Is that...? That's Primordus! Right there! I've never been this close to an Elder Dragon!
: Should we be worried about it...I don't know, moving and killing us all?
Taimi: I theorized the machine would put it in a state of paralysis... Looks like I was right.
: So what's going on with Balthazar?
Taimi: He's somehow inserted himself into the system... And he's so magically adept... So in order to absorb...
Taimi: Okay, I'll admit it. I don't really know exactly what's happening. But...here we are. Clock's ticking. What do you think?
Still capable of summom Temar and Tegon.
On POF(to be continued/edited, i get out of time atm)
What do you guys think, I forgot something?
"The mists are full of lies"