Typically for any other type of card, printing this would yield an energy card. However, in the case of a metal type, no error message/checking takes place when the card type results in an invalid result (because metal energy isn't a thing. Was hoping for double colorless maybe?). Consumes the card and returns nothing when print is finished. Maybe warn us in the future?

Will add an ingame card listing which will detail printing reagents.

Closing due to age, to clean up the tracker for more current versions. If this is still an issue on the most recent versions, please open a new ticket! Thanks.