You have asked that too many times without resolving the issues presented. So I'll assume that we will let them in the hands of the referee.
So, for a duel based on the build I quoted in post #2,246, with his own simulacrum, mounted on two Planar Bound nightmare, flying at 650 ft above the wizard, with no hiding shenanigans, and taking into account that nothing outside of what his mentionned in the builds happened, here is a build. It is not very strong, so you should be able to defeat easily.
Name and race: Shaasssarass, Yuanti Pureblood.
Class: Chronurgist Wizard 20
Abilities (point-buy based): STR 8, CON 16, DEX 14, INT 20, WIS 14, CHA 9
Feats: 2 ASIs in INT, 1 ASI in CON, Metamagic Adept (Distant, Empower) and Alert.
HP: 142.
Noteworthy abilities: magical resistance (racial), speaks common, abyssal, draconic, poison immunity (racial)
Cantrips: Poison Spray (racial), Mending, Toll the dead, Firebolt, Prestidigitation, Mage Hand
Spell mastery: longstrider (cast hourly on him, sim, and mounts), Tasha's Mind Whip.
Signature spell: Hypnotic Pattern, Bestow Curse.
Prepared spell list on the day of the fight (for the wizard, on the day of the fight): longstrider, tasha's mind whip, feather fall, absorb elements, crown of madness, dispel magic, haste, dimension door, hypnotic pattern, resilient sphere, mental prison, otherwordly form, fireball, power word stun, freezing sphere, ravenous void, planeshift, teleport, dark star, demiplane, imprisonment, timestop, wish, chain lightning, time stop.
[plus Suggestion (racial) Animal friendship (racial)]
For the sake of simplicity, let's assume that on the day the simulacrum was created, the spell list was the same, except that simulacrum replaced the demiplane. If the sorcerer can prove some kind of success against this build, I'll perfect it.
Preparation before the fight: both him and his simulacrum are riding Found Greater Steed Pegasi. They start at 300 ft up, on their way to Candlekeep, hoping to make it safely there before the night, as some rumours speak of a lunatic sorcerer operating in the vicinity (that makes the Sorcerer starting at 950 ft, since he's 650 ft above the wizard). Has an emergency demiplane with a copy of spellbook, magical focus, usual components and so on along with a clone ready. Contingency : "Distant dimension door whenever I hear the words Karoukatchiketaf doubidou stash stash" for the Simulacrum and the same for the wizard for the Wizard (should free-flowing dim door be allowed). In the contrary, it's 500 ft up.
Anyone willing to arbiter this match?
Edit: Miscalculation of HP. I am still undecided if it's worth an ASI in CON to drop Lucky, but let's start with an underoptimized build as a starter for our would be world dominator.