Assume Undead Form (EFA - A)

You transform into an undead creature of CR 3 or less.

Your game statistics are replaced by the statistics of the undead creature, but you retain your alignment, personality, and Intelligence, Wisdom, and Charisma scores. You also retain all of your skill and saving throw proficiencies, in addition to gaining those of the creature. If the creature has the same proficiency as you and the bonus in its stat block is higher than yours, use the creature's bonus instead of yours. If the creature has any legendary or lair actions, you can't use them

You can revert to your normal form earlier by using a bonus action on your turn. You automatically revert if you fall unconscious, drop to 0 hit points, or die.

When you transform, you assume the creature's hit points and Hit Dice. When you revert to your normal form, you return to the number of hit points you had before you transformed. However, if you revert as a result of dropping to 0 hit points, any excess damage carries over to your normal form. For example, if you take 10 damage in undead form and have only 1 hit point left, you revert and take 9 damage. As long as the excess damage doesn't reduce your normal form to 0 hit points, you aren't knocked unconscious.

You can't cast spells, and your ability to speak or take any action is limited to the capabilities of your undead form. Transforming doesn't break your concentration on a spell you've already cast, however, or prevent you from taking actions that are part of a spell that you've already cast.

You retain the benefit of any features from your class, race, or other source and can use them if the new form is physically capable of doing so. However, you can't use any of your special senses, such as darkvision, unless your new form also has that sense.

You choose whether your equipment falls to the ground in your space or merges into your new form. Equipment that merges with the form has no effect until you leave the form.