Target: one creature
Attack: Intelligence + 1 vs. AC
Hit: 1[W] + Intelligence modifier damage. Each ally adjacent to the user gains a +1 power bonus to attack rolls, and a power bonus to damage rolls equal to the user's Constitution modifier or Wisdom modifier, until the end of the user's next turn.
Level 21: 2[W] + Intelligence modifier damage. +2 power bonus to attack rolls.
Magic weapon is a 1st-level artificer at-will attack power. It is a weapon attack that, on a hit, deals damage comparable to a basic attack, and also grants adjacent allies a bonus to attack and damage rolls. The bonus to damage rolls is either Constitution or Wisdom based.[EPG:47]
Characeter optimization groups rate this as a mandatory power, due to the bonus accuracy, being versatile in its use. It operates with any weapon.[Char-op artificer]