Prism Monsters

A Prism monster is a basic monster. A prism monster is a special monster type where these monsters can either be an altar monster or a spell book one.

They are played as basics. (They cannot go in the Regeneration zone)

In order to summon a Prism monster, you need to discard monsters of the element(s) shown on the left box below the name box from the field and send them to the catacomb.