Super Attack

An Advanced Command is an upgraded Bros. Attack in Mario & Luigi: Superstar Saga. Advanced Commands are quite different from the regular Bros. Attacks. They can completely change the effects of the attack. To unlock an Advanced Command for each Bros. Attack, Mario or Luigi must successfully execute said move a number of times, as shown below:

Mario's Advanced Commands

 * Splash Bros.: 20 times (After the first command, Luigi throws Mario up and Mario damages the enemy solo. Can hit spiky enemies)
 * Swing Bros.: 10 times (While Mario if flying back to Luigi, Luigi jumps to Mario and then spin over the enemy, causing damage and possibly stealing an item)
 * Chopper Bros.: 32 times (Mario dunks Luigi into the ground and he pops up over the enemy. Mario again dunks Luigi, Luigi pops up, etc. Can be done indefinitely)
 * Fire Bros.: 20 times (Mario jumps up and hits the fireballs, congregating all of them into a larger fireball. When all are fired or put together, Mario jumps up and hits it into the enemy. Can cause burn.

Luigi's Advance Commands

 * Bounce Bros.: 8 times (Mario jumps up onto Luigi, they bounce once more, then Luigi then Mario jump onto 2 separate enemies (only one if there is one))
 * Cyclone Bros.: 21 times (After all times the enemy is hit, Luigi goes on top of Mario and hammers the enemy. May cause dizzy.
 * Knockback Bros.: 43 times (Mario rolls into a ball and Luigi hits him. Mario spins onto the enemy and back to Luigi. Luigi hits Mario again, etc.)
 * Thunder Bros.: 24 times (Mario dunks into the ground and he electrocutes the ground, affecting all enemies. Can cause power down.)

Trivia

 * Mario thinks of all advanced commands, except for one which Luigi thinks up; Cyclone Bros.