Blocking Materials

 is a decoration.

It can be found in a Decoration Chest.

Trivia

 * The purchase cost was discounted to 10 during the Mother's Day Sale 2016 on 7th May 2016.
 * was awarded as the fourth prize in the Shooting Stars Mini Event on 16th May 2016.
 * was awarded as the fourth prize in the Wizard Training Mini Events.
 * lost its premium status with the.
 * was added to the Decoration Chests from the to the.