It is possible to gain Daiyusha's extra critical without the use of the above cards or others such as Cosmo Roar, Guide Dolphin and Speed Star. If you have Commander Laurel on a Rear Guard circle, it may be worth attacking with Daiyusha first rather than rear guards. If Daiyusha hits the opponents unit, whether it's Vanguard or Rear Guard, and drive checks a trigger, give the power to Daiyusha. Then using Commander Laurel 's skill, by resting four rear guards, Daiyusha stands with that power boost from the trigger, so when it attacks again, it'll meet the requirements for it's skill. Also, if you checked a Stand Trigger, you can stand the boosting unit for an even greater attack.