Yeah, that's terrible. AF and FW are both pretty much weaker versions of Magic Weapon, and one's an encounter power at that.
Hmm. For a dwarven artificer, I'd be looking (aside from MW -- a gimme) at abilities that did their main thing without hitting; that way you avoid the penalties from having a lower Int than most artificers.
So...
At will: Thundering Armor (+1 AC to an ally even if it misses, push on a hit)
Encounter: Shielding cube -- but I'd be tempted to deviate from this rule and use Scouring Cube, which gives everyone +2 to hit the target's AC (-2 to AC) for a round if it hits.
Dailies: A few good choices here:
Flameburst armor: Auto damage is really not terrible, particularly an auto damaging burst 1 that marks foes. Drop it on the fighter and have fun.
Icebound Sigil -- hand it to the avenger or rogue for maximum damage potential. Or put it on your own weapon or implement and get damage like unto a striker.
Caustic Rampart: Great controller fun; doesn't need to hit.