How about a teleport ritual gone awry? Perhaps the apprentice (remember we are low level) wizard's master was supposedly sending him somewhere else, but sensed the great potential power in her apprentice and took the opportunity to send him far away into the Stolen Lands so as not to be a threat. Powerful people have been preemptive about potential threats since before Laius ordered the execution of Oedipus.
PS I've heard back from both FourMonos and JoeNotCharles and they're both in. So we'll have three new party members (the two newcomers + Ezmerelda's replacement PC) and the departure of Ruarc and Ezzy.
Here's some raw stats...still tinkering with background story.
[sblock=Arcata]====== Created Using Wizards of the Coast D&D Character Builder ======
Arcata, level 2
Arcane Implement Mastery: Staff of Defense
Human Power Selection: Bonus At-Will Power
Background: Birth - Omen (+2 to Arcana)
FINAL ABILITY SCORES
Str 8, Con 14, Dex 11, Int 20, Wis 12, Cha 11.
STARTING ABILITY SCORES
Str 8, Con 14, Dex 11, Int 18, Wis 12, Cha 11.
So as someone who's going to be joining halfway through, what background should I read? My character won't know most of the details of what's happened already, so I don't think I should read the entire thread, but I would want the basic background (like where you all are, I think).
The obvious way to have Ironheart join you is to have him stumble into the Feywild again, and then stumble out somewhere else. But that's a bit generic, hopefully we can come up with something more tailored to the group.