Scorching Dragonfire

Light Speed (As long as this spell is on the stack,
players can't cast spells or activate abilities,
including mana abilities.).
Destroy each artifact you don't control. For each
artifact destroyed this way, Scorching Dragonfire
deals 1 damage to each opponent and 1 damage
to each creature controlled by your opponents.
"Dragonfire?!... I thought this was supposed
to be a sitcom!" -- Newman, last words