White sees itself as the good guy, so it doesn't like "shooting first," but as soon as the opponent's creature takes a swipe at either the white mage or his or her creatures, white is in the clear to destroy it
Considering this, we use almost anything we can use to protect them
Blasphemous Act Rounding things out, we have Blasphemous Act, a card I see at least 1.5x per game
Unless youre planning on knocking out the table in the opening turns, most Commander games can go on for dozens of turns
Some are triggered, and others are activated abilities
Some abilities, like that of Pixie Guide and Barbarian Class, replace rolling a die with rolling extra dice and ignoring the lowest roll