Here's the new magic missile, revised in the latest WotC errata:

Magic Missile
Wizard Attack 1
You launch a silvery bolt of force at an enemy.
At-Will ! Arcane, Force, Implement
Standard Action Ranged 20
Target: One creature
Effect: 2 + Intelligence modifier force damage.
Level 11: 3 + Intelligence modifier force damage.
Level 21: 5 + Intelligence modifier force damage.
Special: If the implement used with this power has an enhancement bonus, add that bonus to the damage. In addition, you can use this power as a ranged basic attack.

Wonder why it's taken them so long!