MTG Builder is an unofficial support application for Magic: The Gathering. You can use functions such as card search, deck management, deck list output for MTG Arena, and deck registration sheet output. Card images, deck lists including those for MTG Arena and deck registration sheets can be shared with friends using the share function to attach and send to SNS, e-mail, etc. You can use to adjust the deck for the tournament. If you have any problems, please contact the e-mail of the developer