by Gus_Sin
Yes the target doesn't teleport till after the Declare Attack so the whole "If you discover that you cannot legally attack your target during this step..." thing is irrelevant.I don't know man, I agree that there should be no damage and the CL should end (not countered, technically), but then there should be a text in the rule book regarding this. Right now there is nothing that says the target of an attack should still be valid in damage phase for the damage to be applied.
Anyway, yes, an official ruling would be nice :)