Cardfight arena is a new Cardfight Vanguard simulator I found today. Its a bit of something to grasp, especially because the controls are completely different from byond, however, the math is done for you automatically, so no more worrying about doing the math xD
Click the link to download the program, the control guide is also on that website.
Clicky here for the program
✔ Mentally dating a character that doesn't actually exist.