I just figured something out that is devastating if pulled off right.

Materials:

5 ghols
4 satchels
1 explosive pus

Many already know the satchel, pus combo. But if you take 4 ghols, each loaded with a satchel and 1 ghol with pus, you have a hefty combo. The trick is to have the pus ghol behind the satchel ghols. The distance behind should equal the range of thrown pus. 

Send this formation at a large infantry group. Just as the 4 satchel ghols arrive, the pus ghol throws. The satchel ghols explode with overlapping explosion and do a real number on the enemy infantry. Have friendly infantry near by and clean up the mess. 

I used it with fair to excellent results tonight. The trick is to have a clear lane of approach so your ghols don't get out of formation.  Bunched enemy infantry is VERY susceptible to this.

Happy hunting!