In Prodigy, the new battle system allows you to swap out your wizard for one of up to four additional team members.
So, how do you do it?
When in battle, your wizard has four possible actions he or she can take. One of these options is the "Switch" option.
When you select this option, you will be shown a list of the available members of your team that you can switch into battle.
Next to each of your teammates will be:
1. A star icon: This indicates the level of your team mate.
2. A heart icon: This indicates how many hearts your teammate currently has (not their total number of heart containers).
If your team mate has run out of hearts, then they will be shaded and will not be selectable from the switch menu.
Choose your teammates carefully before heading into battle and switch in the right ones to make the most of elemental bonuses.