Thunder screen is an ability which increases the players defence when faced with thunder based attacks, much in the same way as all the abilities in Birth By Sleep with 'Screen' in their name. The ability has two slots allowing you to have two levels of the ability attached at one time.
Learning Thunder Screen
Kingdom Hearts Birth by Sleep
- Thunder Screen can be attached to a type K or type L Command recipe through Command Melding, either randomly or by applying a Shimmering Crystal.