Mc Ocean Messe (U)

[Set] (This card remains on the field.) At the beginning of your turn, choose a 《Battle Building》 from your drop zone, and you may discard a hand card. If you do, put the chosen card into your hand. [Counter] 【Act】 Pay 1 gauge. If you do, call a "MST, Mc Harry Messer" from your hand or drop zone without paying its [Call Cost]. Then, put this card into its soul.