At the time this card is selected as an attack target by an opponent's monster, you can activate Trap Card(s) from your hand.
Here are some popular trap cards that can be used into any deck and are useful when your opponent attacks.
Jetroid has a decent amount of defense while most high attack monsters have very weak defense. You could use this to your advantage by activating Inverse Universe from your hand when your opponent attacks your attack position Jetroid.
|Monster/Spell/Trap categories||Allows activation of Trap Cards from your hand|