You can take any weapon or piece of armor that you can use/wear and pull it into your body. Armor will keep its AC but will not be seen or affect your appearance. Weapons will vanish inside you until you take them out to kill your foes.

You store extra blood in your body. You can use this blood to use any ability that your race grants, except for weaponly body. Whenever you have a short rest, you get half your charges back; you get all charges back on a long rest. You get 1 blood charge per level for a maximum of 20.

You can consume the blood of an enemy and perfectly copy their body and voice as long as you consumed it within the last hour. This effect lasts for as long as the slime wishes, but they must roll a Constitution save (12+) every hour to maintain their form; if they fail, they will instantly transform back into their base form. No matter what, however, the colors on clothing will be slightly darker, the eyes will remain red, and the hair will also either be darker than normal or blood red.

Without blood, the slime may create a temporary form for itself that is different from its normal humanoid form. This can be a random woman or the queen herself; however, something is always wrong, and the slime may only change into the same sex as they currently are. These faults can be anything, but the most common faults are wrong-sized assets, wrong height, wrong face, animal ears and tails, and blood leaking from the eyes.

Your eyes glow red in the dark as your vision also grows red; however, you can see in the pitch black up to 60 ft

Your body turns fully into blood, allowing you to go through objects with cracks, openings, or anything else water could get through. However, the ability is new and scary so it's rather difficult as you grow stronger it becomes easier

Level 5
1d20-3
disadvantage 

Level 7
1d20

Level 10
1d20+2
Advantage

You may drink the blood of anyone who is cut and actively bleeding. Upon drinking their blood, you regain lost blood (Health)

1d4
+1 for every level above level 3

Resistance to diseases, especially those within one's blood.