"Yeah. Uhh." The enthusiasm is a bit worrying, and he's almost thinking of Sahgar as a spirit, just because of the talking animal thing, but according to Dareni flattery should keep him friendly...
"I'm from a world where the Fire Nation is currently at war with everyone else. They massacred the Air Nomads, and are trying to wipe out us, the Water Tribes, and if they win they'll move on to the Earth Kingdoms. I asked Dareni about skilled mages who might be willing to be hired by us. We have bending, but it's not really much of an advantage compared to death magic, or defense magic, or illusion magic, because the Fire Nation has bending too. But they're the aggressors, they're constantly having civil wars even when the other nations were at peace, I don't think if the Fire Nation conquered the world we would have an era of peace like Har has accomplished. The opposite, probably. If we ever want our world to be as civilized as yours, the Fire Nation needs to get smacked down. And illusion magic will be super handy for that. I can already imagine the ambush potential! As the only illusion mage in the world, we'll be able to pay you quite a lot in local terms. All the sealbear you can eat, healing waterbending if you ever get hurt, and that's just for starters."