I've been thinking about Varys' riddle to Tyrion, and really I think its the key behind Varys game. In case you all don't remember:
"In a room sit three great men, a king, a priest, and a rich man with his gold. Between them stands a sellsword, a little man of common birth and no great mind. Each of the great ones bids him slay the other two. 'Do it,' says the king, 'for I am your lawful ruler.' 'Do it,' says the priest, 'for I command you in the names of the gods.' 'Do it,' says the rich man, 'and all this gold shall be yours.' So tell me- who lives and who dies?"
His answer of course was:
“Power resides where men believe it resides. No more no less. It's a murmers trick. A shadow on the wall... yet shadows can kill."
I really think that Varys is referring to his goal with Aegon. All 3 reasons are why people will follow Aegon, Varys is convinced. People like John Connington will follow him for he is seen and believed to be the rightful heir to the throne and the answer for the vicious Lannister alliance.
People will follow him because the Faith will eventually denounce Robert's bastards as abominations born of incest and that it is in the God's will that Aegon return to the throne. Even though I don't think Varys could foresee this, the Faith Militant will support Aegon's claim from the Gods themselves.
The Golden Company is following him of course for money. What everyone else doesn't know is that select members of the Golden Company know Aegon's true birth, and its vengeance of House Blackfyre in Westeros.
Therefore Aegon's power resides from three places, and thus Aegon himself is the correct answer to the Riddle. The general sellsword is a representative of the people of Westeros, and Varys sees Aegon as the other three men in the room, which ensures his victory in the War. But as Varys said as well, this is merely all a trick. Aegon really has no claim, but yet he has now become all three men at once. He's a shadow that has come back to take over Westeros, making the Targaryens and the Lannisters pay for their past sins.
This post was edited on 2/18 at 3:22 pm