Well, as we've seen with Ash's Tauros using it a bunch of times, Fissure makes a huge crack in the ground as it goes, but it also sends a beam of light, chances are, the beam would just envelop the pokemon and it would faint, kinda like destiny bond did when Misdreavous used it on Ash's Glalie...
Sheer Cold, quite simple to figure out =P
Guillotine however... That had a way to be creepy, but unless I'm mistaken, one of the crabs landed it on some pokemon a while back...
Horn Drill again, could be pretty bad to animate, but would probably just have the weird lines and pokemon fly back =P