Sucker punchNow that Aegislash has gotten the boot to Ubers, Croak's STAB's aren't completely immune to anything not named Shedinja!
Now I'm trying to figure out a SD set for this guy but can't think of what to use aside from its STAB attacks. Ice Punch for dragons, Gliscor, and Lando-T?
If you're using it on a dedicated rain team, which is usually ideal, I'd say SD is better than Ice Punch. My reasoning is that on a rain team, almost all team members threaten Gliscor, so the Ice coverage isn't necessary. However, if you're using it as a Keldeo/Rain/Heracross check on a normal team, I'd say the more coverage, the better.Sucker Punch, Gunk Shot, Drain Punch, and Ice Punch/Swords Dance are solid.
Trick is whether or not Sucker Punch/Ice Punch are more important than Swords Dance. Toxicroak really doesn't hit that hard without a boost but Ice Punch and Sucker Punch are really really nice to have.