Anything is possible with the Amulet in his hand.
He can make someone fly. He can bring back copies of the dead, and though they are soulless and not like the real thing, he can just command them to act like it. There is absolutely no threat that he can't manage if he can wish for the Amulet to counter it at the right moment.
This kind of power... God forbid it if someone like King Casserome received it. And God did forbade it.
But.... Is Sangfroid really worth of such power?
He had used it again and again for menial tasks, a solution to tiny problems, and for necessity. The Noble Huntsmen is right. With its power, he can make a new kingdom rise from the ashes like a phoenix. No, he can even rise another Thirteen Kingdoms, endless kingdoms, more and more....
If he had even the sliver of greed normal humans have, he would have realized this already and used such power for that.