When your commander is sent to the graveyard or exile, it goes there first (so "dies" triggers still fire), and then you may move it to the command zone as a state-based action
In addition to taking away all the abilities of your opponents creatures, it also replaces itself upon entering the battlefield, and it is this clause which makes it very attractive in the value-oriented Modern environment
If you really want the additional Anger, go for it
Blank Back Typically, the backs of trading cards are printed first
At the time of Seismitoad- EX , the format was very limited because there were few cards and decks that could handle the Quaking Punch + Hypnotoxic Laser combo, which basically inflicted Item lock, high damage, and a 25% chance of the opponent not attacking