[Ramsus]

You actually need to roll one attack/damage roll for each creature it's targeting.

Also you need to specify targets and in this case where you want to slide each creature to. I think it's safe to say you probably missed whichever the first one was that you targeted. Considering your position you probably went for "Skeleton" first, so roll another attack for Skeleton1 and specify where you want to slide it if you do hit. I would recommend B18, that way everyone can still see/target it without penalties.

Edit: Also, I didn't notice that that power only did 1d6, not 1d6+something. Looking at the other controller's area attack at-will powers, it seems oddly unfair. Alas, it hasn't been erratad.