Minions for mini boss battle

[PraxisVetli]

All you in my zambie campaign, get out!




Ok, so my players are about to fight an advanced young (not quite juvenile) blue dragon in a sewer. Odd place for a blue, I know, but I have my reasons.
Anyway. I'm wondering what might be some good mooks to throw in. I was gonna go Shocker Lizards, but those get troublesome fast.
I'll be bumping in the sound imitation ability, and first level casting, going mainly illusion spells to keep them on their toes. I'll be switching it's burrow to a swim, as well.
So I need minions that can function in water as well as land, and are something the dragon can coexist with. Immunity to electricity is preferred.
Maybe I should go with shockers, but their group taze seems like it could be too much, at the least it might overshadow the dragon's breath.
The group is 5th lvl, composed of a warmage, 2 swordsages, harbinger (pf) and a master of flies.

[johnbragg]

All you in my zambie campaign, get out!




Ok, so my players are about to fight an advanced young (not quite juvenile) blue dragon in a sewer. Odd place for a blue, I know, but I have my reasons.
Anyway. I'm wondering what might be some good mooks to throw in. I was gonna go Shocker Lizards, but those get troublesome fast.
The group is 5th lvl, composed of a warmage, 2 swordsages, harbinger (pf) and a master of flies.

In the sewers, you say?

Giant Leeches.

Demonic Vermin (rats) http://www.d20pfsrd.com/bestiary/monster-listings/templates/demonic-vermin-cr-1

maybe a variation of sahaugin (http://www.d20srd.org/srd/monsters/sahuagin.htm) for brackish sewer waters?

And crocodiles. Gotta have crocodiles in the sewers.

[Thealtruistorc]

Demonic Vermin (rats) http://www.d20pfsrd.com/bestiary/monster-listings/templates/demonic-vermin-cr-1

maybe a variation of sahaugin (http://www.d20srd.org/srd/monsters/sahuagin.htm) for brackish sewer waters?

And crocodiles. Gotta have crocodiles in the sewers.

Combine all of these ideas. Make the players fight a horde of fiendish rat-crocodiles of Destiny! (http://www.d20pfsrd.com/bestiary/monster-listings/magical-beasts/vahana)

Also, sewer trolls are a thing. Add a few of those to the adventure.

[ATHATH]

Alternatively, have just the Blue Dragon with no minions and use the Two Orcs (http://theangrygm.com/return-of-the-son-of-the-dd-boss-fight-now-in-5e/) method of creating a boss.

[PraxisVetli]

In the sewers, you say?

Giant Leeches.

Demonic Vermin (rats) http://www.d20pfsrd.com/bestiary/monster-listings/templates/demonic-vermin-cr-1

maybe a variation of sahaugin (http://www.d20srd.org/srd/monsters/sahuagin.htm) for brackish sewer waters?

And crocodiles. Gotta have crocodiles in the sewers.

Where are giant leeches?

[johnbragg]

Where are giant leeches?

Pathfinder has Giant Leeches (http://www.d20pfsrd.com/bestiary/monster-listings/vermin/leech/giant-leech) on PFSRD. Although OP asked for minions, and they're more of an attrition encounter.