Amorphous Body: Your body is made of a thick, black, oily substance that is constantly shifting and changing shape. You can move through a space as narrow as 1 inch wide without squeezing.

Abyssal Resistance: You have resistance to necrotic damage.

MOVMENT- while in ichor form ABI can move incredibly quickly, can squeeze or "burrow" through any spaces that are large enough for its gem to fit through, and can easily climb up and stick to any surface making it very maneuverable, while possessing a vessel it is bound by the movement capabilities of whatever it is possessing. ABI cannot swim or fly unless possessing something that can swim or fly, in the case that ABI is thrown into a body of water while in ichor form it will immediately sink to the bottom and begin moving around naturally. it does not need to worry about drowning due to the lack of a raspatory system.

POSESSION- ABI can attempt to latch onto and possess any creature with a physical tangible body, along as it is bigger then the anchors gem. once the ichor is latched on, the vessel must make a wisdom saving through against the influence of the ichor, if they succeed the vessel will take 1 D4 psychic damage and the ichor will unlatch from them, unable to make another attempt on that creature for 24 hours. in the case that the vessel fails its saving throw, the ichor will change its shape and size to disguise itself somewhere on the vessels body, most likely in the form of a glove, bracelet, necklace, or mask. (Note that the gem does not change size to fit the vessel, only the black "ichor" like substance that the body is made of)

MOVMENT- the ichor is restricted to the movement capabilities of whatever it is currently possessing. (the ichor will take on the stats of the current vessel, except for some minor changes due to racial traits)

PRESERVATION- the ichor is smart enough not to purposefully do anything that will put its vessel in immediate danger, even if they don't pose a threat to the ichor itself. this includes:
breathing: while ABI do not have a raspatory system, they are aware of and will try to avoid the raspatory dangers the vessel faces like toxic fumes, drowning, suffocation ECT.
rest: ABI do not have the need to sleep, however know the negative effects lack of sleep have on the vessel so will force it to rest at appropriate times.
food/water: ABI do still require energy from food, which they can feed off the energy that is made by having the vessel eat, and they know to actively avoid food and drink that is bad for or fatal to the vessel.

MIND LINK- after possessing a new vessel, the ichor connects to their soul and brain allowing it access to basic information and recent memories of the vessel. after 24 hours (or a long rest) of a successful uninterrupted possession, the ichor can fully access all of the vessels unsuppressed memories, and skills including any special abilities/skills, knowledge, and understanding any languages that the vessel can already understand. (if previously unknown language is learned from a new vessel, add it to the ichors now known languages to transfer between vessels)

Abyssal Ichor has the ability to create a temporary copy of any non-organic item it has touched before. While this does include magical items, it can only copy the physical properties of the item, not the magic that the original had. The ichor can only conjure one item at a time, and Once the vessel is no longer touching the conjured item it will disappear after a few short seconds.

(thought this would be handy since once you switch vessels its highly likely you lose all the gear they were carrying)

you have the unique ability to quickly learn any new language that a vessel knows. after a successful possession you will be able to understand anyone speaking it, and speak a few common phrases in the language, after 24 hours of uninterrupted possession you will fully understand the language(s) from that vessel and be able to transfer that knowledge with you in the future.

abyssal ichor naturally knows: abyssal, under common, and 1 other choice language.

abyssal ichor do not have eyes. while possessing a vessel they see and hear through the vessel but can also choose to use their blind sight in certain situations. while not possessing a vessel, they can only use blind sight. blind sight effects an area 60 ft around the abyssal ichor, allowing them to detect everything within the area with medium detail but cannot see color, text, or fine details.