"Hmm," he repeats. He takes the crystal and strikes it. (Magically speaking it is extremely straightforward and, despite what he called it earlier, its method of operation is not really very mysterious at all.)
"Hi! I'm a miracle distributor and I would like a list of all the home shrens so I can go turn them into dragons. I have already done it for everyone on this iceberg."
"I am at this very moment looking at eighteen baby ex-shrens happily flying around. They are extremely cute. Would you like to come see them for yourself, or did you have some other kind of proof in mind?"
"That depends on how many there are. Definitely the ones under twenty, but if the rest are a very long list then I should probably wait to get to them until I've dragoned all the little ones and then gone and told them about it."
Lazarus decides that the most obvious way to keep them all straight would be to teleport to each one as the dragon lists them. One, two, three, four, five - with those still fresh in his mind, he makes a wish - six, seven, eight...
Oh, and he's gone and teleported away with Quaro's minimally mysterious speaking crystal. He returns to the iceberg. Now that he's been to all eight stray shren baby locations, he shouldn't have any trouble going back to them to explain things.
He teleports to the house of the oldest out of those eight baby ex-shrens.
He goes up to the door, wonders if people knock on doors in this world, and decides that the presumably-adult dragon inside is close enough that he doesn't have to. "Hello!" he calls through it. "I'm a miracle worker from another world and I just turned your baby shren into a dragon!"
"I am a miracle worker from another world and I just turned your baby shren into a dragon," he repeats. "He can fly now."
And he's off to the next oldest baby.
He waves goodbye to the youngest baby and returns to the iceberg ledge to see if Quaro or anyone who might be willing to give Quaro his crystal back is nearby.