Blood Ooze

Malleable Form. The ooze can enter a hostile creature's space and stop there. It can move through a space as narrow as 1 inch wide without squeezing. Creature's that start their turn in the same space of the ooze must make a DC 14 Strength saving throw or be unable to make a move action on their turn.

Liquid Anatomy. If the ooze takes cold damage, it partially freezes; its speed is reduced by 20 feet and can't recover hit points until the end of its next turn.

Blood Siphon. Whenever the ooze deals necrotic damage to a creature, the ooze recovers that many hit points.

Multiattack. The ooze makes two slam attacks.

Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 4) bludgeoning damage and 9 (1d8 +4) necrotic damage.

Splatter (Recharge 4–6). All creatures within 5 ft must make a DC 14 (16 if the creature is sharing the same space as the ooze) or take 9 (1d8+4) necrotic damage. The ooze gains temporary hit points equal to the amount of the total necrotic damage dealt.