Slam never breaks a promise, and he never makes a promise he can't keep.

As an Earth pony Royal Guard, he's sworn to protect his squad, especially the unicorns that have to risk their lives as they cast spells.

As a dad, he'd never miss one of his son's big days. He said he'd get his son a present, and he will.

Even if he has to do it from a hospital on the other end of the world.