For maximum fun, have one of the bullywugs (or two of them!) ride the Giant Enemy Crab. Because that's awesome.
Level 1 Troop (Humanoid)
HP: 19 AC: 17 PD: 15 MD: 11
Jagged Spear: +9 vs AC, 5 damage
Natural 16+: Bullywug pops free
Invisibility: Once per battle, turn invisible until the end of the next turn or until the bullywug attacks. Attacks that hit while invisible do +3 damage.