"I can make stuff! Any stuff! I made this suit that lets me fly!"

He is bombarded by requests for a demonstration.

"What do you want me to make?"

"Horses!" shouts a very small girl near the back.

Sadde points towards a random direction in the distance—

—and there are horses.

A couple of the kids laugh and warn Sadde not to do that in front of their father.

"Why not?"

Their father is almighty Poseidon, God of horsies!

"Isn't Poseidon god of the seas?"

"That too." 

"Huh. Why wouldn't he like this, then? Shouldn't he like horses?" One of the horses neighs.

They giggle. "You're stealing his thing!"

"His thing is making horses appear?"

"It's water control" whispers Martin. "They're joking."

"Oh. Okay?"

The godlings seem to accept Sadde's presence quite readily.

Well are they going to play or what.

Of course.

He's getting a better grip on this. He starts declaring things out loud like a villain before doing them.

Fortunately for him, since many of the Olympian kids are at least half siblings, there aren't too many powers to take into account.

Yup!

...what sorts of powers even are there?

Well, "Poseidion's" kids can manipulate water, some others seem to be able to control the earth beneath their feet, and one or two just seem to always be in the right place when they need to. 

"What are your powers?" he asks them.

"We can see the future," replies one of them.

"Really? How far? What number am I going to tell you about?"