1.Create a party of 5 shads. More can be used as well too if the party casts a over each other....
2. (disclaimer I have not made a shad so I'm not sure how much range they will need for each boss run) I believe 75k clean range should be enough for each shad.
3.Each shad cast smokescreen as soon as the other shads smokescreen runs out.
4. Fuck shit up during smokescreen.
5. Win maplestory

Why this works:
Smokescreen = all damage avoided for 60 sec at level 30 and it has a 300 sec cool down.

I am not sure if this has been done before but if it has i'd love to see a video of it.

The issue with bosses these days isn't, as far as I know, surviving. It's doing enough damage to kill it between all the DRs and cancels within the time limit

This is old. Bishops already can do this with just 3 (or was it 4).

meh, ive only noticed that 1/1 sed is a problem for me.