Here's why:
* Once per game: Ability cards are designed to be used only once during a Bakugan battle. They are usually discarded after being played.
* Strategic advantage: This rule encourages players to carefully consider their options and choose the right card for the situation.
* Limited resources: Each player has a limited number of ability cards in their deck, which means using them strategically is essential for victory.
Exceptions:
There are very few exceptions to this rule. Some specific ability cards may have effects that allow them to be reused under certain conditions, but these are rare.
It's important to check the individual card text for any specific instructions or conditions that might allow for reuse.