D20 hit and run character

[Doctor Awkward]

Anthro-Octopus has 2 HD naturally. With necropolitan you can cut it to 1 and replace with a class HD. Though it's really sketchy because you can't usually pay for the rite at ECL 2...

And I think the ritual itself can kill you? I don't remember exactly. At least I know there's an octopus variant that can barely fit through, but it's probably the LA+1 version.

Necropolitan ritual cannot drain racial hit dice.

It drains only XP. You lose 1000 XP for becoming a necropolitan. If this causes you to lose a level then you lose a level.

If you do not have 1000 XP to lose, you turn to dust.