Cloudian - Storm Dragon [SGX3-ENH10] Common

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by banishing 1 "Cloudian" monster from your GY. Cannot be destroyed by battle. If this card is in face-up Defense Position, destroy it. Once per turn: You can target 1 face-up monster on the field; place 1 Fog Counter on that target.