Starfinder Hydra

[SirShua]

Hey! I'm thinking of setting up a small side quest where a town's water supply has been poisoned and causing illness, and want to put a hydra at the end of it. It'd be lurking in a partially sunk ruined starship (some poaching and shipping gone wrong) at the top of a reservoir, and would hide in the water, forcing the PC's to fight in in it's domain. I was wondering how this would stack up as a conversion:

Hydra (5 heads) CR: 5 XP: 1600
N Huge Magical Beast
Init +0, Darkvision 60ft, low light vision Perception +16
HP: 60
EAC: 16 KAC: 18 Fort +8, Ref +8, Will +3
Fast Healing 10
Offense
Speed: 20ft, Swim 20ft
Melee: Bite +13 (1d6+4+venom) Multi-attack (bites+7)
Space: 15ft Reach: 15ft
Stats
Str +3; Dex +5; Con +2; Int -4; Wis 0; Cha -1;
Athletics +16

Hydras have fast healing equal to 5 + its number of heads. A hydra can be killed by slaying all of its heads and burning the stumps, or damaging its body. Attacks not declared as an attempt to remove a head target the body. Heads can be targeted individually and have HP equal to twice the Hydra’s CR, killing one deals damage equal to the Hydra’s CR. A Hydra regrows 2 heads for each one severed since its last turn, and these regrow at the end of its turn. At least 5 points of acid or fire damage must be applied to a stump to prevent regrowth for 2 hours.

Hydras may use their multi-attack and a single move in the same round as a unique full action. Hydras may make any of their attacks at any point during their move. A hydra gets one attack of opportunity per head each round, though a target may only provoke one attack per action.

Hydra Venom
Type: Poison (injury, ingested) Save: Fort DC 13, track: strength Frequency: 1/round for 6 rounds, Cure: 1 save

[Ravingdork]

How many bites does that thing get on a full attack?

[SirShua]

I forgot i made this... I think the intention was one bite per head, else I would have put a number in. Having spent more time with alien archive and the game I should tweak this.

[Torbyne]

Does killing a head with a laser count as fire damage for stopping regrowth?

[Metaphysician]

Given that lasers do fire damage, it damn well should. Which means it sucks to be most traditional regenerating critters in Starfinder. Not only does nearly everyone have fire, they have fire that can hit you precisely from hundreds of feet away. :)

[SirShua]

Bring on the kytons then. Requires good magic or silver weapons. As far as I know the only good magic is the holy weapon fusion. And no one thinks about silver bullet in space.

[Metaphysician]

Eh, there are numerous enough critters with "hit by silver" that silver ammo is still going to be off-the-shelf.

[Torbyne]

Metaphysician wrote:

Eh, there are numerous enough critters with "hit by silver" that silver ammo is still going to be off-the-shelf.

I could easily see a weapon fusion that has an internal store of UPBs and as a swift action can craft and load special bullets into its gun. Similar to Judge Dredd; "adamantine bullets!"