Play Baldur's Gate 3 as the biomass from CARRION: a red, writhing mass wearing a human body like a glove.
Pick Biomass at the bottom of the Race list and you get:
Tentacle Grab (Action, 4.5m): hit for 2d8 + modifier and drag the target 3m to you.
Tentacle Throw (Action, once per turn): hit for 2d6 + modifier, fling the target 6m and knock it Prone.
Consume (Action, no cooldown): bite for 2d6 + modifier, heal 1d8 + Constitution, and grow. Each feed adds a Growth stage (up to 3): +5 temporary HP and +1 damage per stage.
Echo (Bonus action): 3 turns of 18m darkvision and Advantage on Perception.
Hive Regeneration: regain 2 HP at the start of every turn.
Burst Out: once per short rest, drop to 0 HP and the biomass tears free, staying up with HP equal to your level.
Amorphous Biomass: Resistant to Piercing, Vulnerable to Fire (CARRION players know why). Plus Darkvision.
Every ability plays CARRION's own sound effects, loaded live from your copy of CARRION. Nothing from either game is in the download, so you need both games installed.