The Magic Hand booster allows certain objects to switch places on a level. You can use it by selecting an object such as a Pig, Bird, or Matchable.

As soon as the first object is selected, you will notice that nearby objects valid for the switch will be highlighted. Tap the one you'd like to make happen!

If no valid objects exist for a switch or you decide not to use the Magic Hand, tap anywhere on a level to cancel it.