* "On, Dasher! On, Dancer! On, Prancer and Vixen! On, Comet! On, Cupid! On, Donner and Blitzen! On, Rudolph! On, Rudolph! Now dash away! Dash away! Dash away all!" (This is the most famous and often quoted phrase.)
* "Away we go!" (This is a shorter and more direct command.)
* "Ho, ho, ho! Let's go!" (This phrase adds a little festive cheer to the command.)
* "Time to deliver!" (This gets the reindeer focused on the task at hand.)
Of course, Santa might also use different phrases depending on the situation, like:
* "Easy there, Rudolph, you're getting a little too excited!" (If Rudolph is getting too antsy.)
* "Good boy, Blitzen! You're pulling strong!" (If Blitzen is doing a great job.)
Let your imagination run wild! Santa is a jolly and festive fellow, so he likely has many ways to get his reindeer moving.