Gaius

Gaius is a member of The Hatchetman's Party, a band of heavyweight hitters who are encountered within the Sewers located beneath the Temple District in the city of Athkatla. 
This is one mean group of individuals so be prepared for a good fight. Gaius is a 14th level elven mage that will use every spell in his spellbook, so watch out for an Invisible Stalker and a sword spider (or two) to potentially join the fight.
See The Hatchetman's Party page for tips on how to beat these guys in a fight.
==Mod content==
===People involved===
Installation of the Sword Coast Stratagems Mod makes some revisions to Gaius. He is changed to a level 14 Invoker and assigned a default SCS "Smarter Mage" script for more intelligent combat behavior, threat recognition and targeting decision logic. Arcane spell casting choices are improved with additional memorized spell choices, including pre-battle defensive buff preparation. He also has the following ready to use:
Minor Sequencer loaded with Mirror Image and Invisibility.
Spell Sequencer loaded with Minor Spell Deflection, Stoneskin and Shield (spell).
Gaius is an Invoker, so will attempt to blast you with evocation spells (where you will have a -2 to your saving throws). You could be exposed to an Ice Storm cast over your clustered party members, a Disintegrate spell may be attempted at a vulnerable party member (with no spell protections), a Delayed Blast Fireball can be used as well. Gaius can also destroy your summoned creatures with a Death Spell and summon his own Mordenkainen's Sword (creature) for assistance.