Blood Amniote

The amniote can move through a space as narrow as 1 inch wide without squeezing.

When the amniote kills a humanoid, the corpse rises as a bloodrot in the same space at the start of the amniote's next turn, acting on the same initiative as it each round.

Creatures that can see the amniote have disadvantage on saving throws against being frightened.

The amniote makes two melee attacks.

Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 8 (1d6 + 5) bludgeoning damage plus 17 (5d6) necrotic damage. If the target is a creature that has blood, it must succeed on a DC 15 Constitution saving throw or suffer health drain equal to the damage taken.

Each living creature within 10 feet of the amniote that has blood takes 22 (5d8) necrotic damage (DC 15 Constitution save for half). A target makes the save with disadvantage if it is grappled by an ooze or undead. If the amniote damages two or more creatures with this action, its speed increases by 10 feet for 1 hour.

The amniote pulls each Large or smaller creature of its choice within 20 feet of it up to 10 feet towards itself. If a target is bloodied, it is also grappled (escape DC 15) by the amniote. Until this grapple ends, a target is restrained and can't regain hit points.