Attacking the brain cylinder is a sunder combat maneuver and applies damage normally to the brain from size as a result.) cylinder itself An attacker familiar with mi-go Saves: A brain cylinder with class levels retains its mechanisms can also detach the brain cylinder with saving throw modifiers from its class levels A brain a grapple combat maneuver In either case, the drone cylinder without class levels has base saves of +0 for all gains a +4 bonus to its CMD against such attacks three saving throws as a result of its one racial HD as from below or from creatures smaller than it but a –4 a construct penalty to its CMD against these attacks from above or from larger creatures Creating a Brain Cylinder “Brain Cylinder” is an acquired template that can be added to any corporeal living creature that has a brain (referred to hereafter as the base creature) Challenge Rating: A brain cylinder has limited methods of interacting with the environment and typically has no way to attack or defend itself physically, giving it a CR of 1/4 If a brain cylinder retains spell-like abilities, psychic magic, or other significant methods of attacking and defending itself, its CR is equal to that of the base creature –1 Type: The creature’s type changes to construct Size: The creature’s size is reduced by three size categories (minimum size Diminutive) Senses: A brain cylinder is blind and deaf unless it has active attachments that grant it vision and hearing Typically, these attachments only grant vision and hearing equivalent to those of a human, so it loses lowlight vision or darkvision A brain cylinder loses all other senses that depended upon a physical body AC: A brain cylinder loses all natural armor bonuses possessed by the base creature, but gains a +6 armor bonus from its armored glass casing Hit Dice: A brain cylinder drops all racial HD but one and changes that one racial HD to a d8 Creatures with class levels retain their HD As a construct, a brain cylinder does not have a Constitution score and does not gain bonus hp from this ability, but it does 302 (Most brain cylinders are Tiny and gain no bonus hp gain bonus hp according to its size if it’s large enough Defensive Abilities: A brain cylinder gains hardness 20 from its armored glass casing It is immune to cold damage and takes half damage from fire and sonic damage Any energy damage (except electricity damage) inflicted on a brain cylinder is halved before applying its hardness to determine actual damage Ranged weapon damage is halved as well, and brain cylinders are immune to nonlethal damage and critical hits Weakness: A brain cylinder is immobile and is treated as an object In addition to having a Dexterity of (and thus gaining a –5 penalty to AC), a brain cylinder has an additional –2 penalty to its AC Furthermore, a creature can take a full-round action to line up an attack against a brain cylinder to automatically hit with a melee weapon or gain a +5 bonus on attack rolls with a ranged weapon Speed: A brain cylinder is immobile It loses all the base creature’s speeds Attacks: A brain cylinder has no method of attacking It loses all the base creature’s natural attacks Special Attacks: A brain cylinder loses all special attacks that rely on the base creature’s physical body It retains all spell-like abilities possessed by the base creature, as well as all purely mental abilities If the base creature was capable of casting spells, it retains that ability but cannot cast spells with somatic, material, or focus components It can only cast spells with verbal components if it has a speech module attached (see Languages, below), and cannot target spells if it has no vision module attached Without a hearing module, a