Swarm Form

You transform into either a swarm of bats, swarm of rats or a swarm of ravens for the duration. While transformed the following rules apply:

• Your game statistics are replaced by the statistics of the swarm, but you retain your class features, hit points, hit dice, 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 swarm. If the swarm has the same proficiency as you and the bonus in its stat block is higher than yours, use the swarm’s bonus instead of yours.
• You can’t cast spells, and your ability to speak or take any action that requires hands is limited to the capabilities of your swarm form. Transforming doesn’t prevent you from taking actions that are part of a spell that you’ve already cast that does not require concentration to maintain.
• Equipment worn by you will be merged into your new form and cannot be used.
• You gain temporary hit points equal to the swarm's average hit points value.
• While in the swarm form you cannot benefit from a short or long rest.

At higher levels. When you cast this spell using a spell slot of 2nd level or higher the duration is increased by 1 hour for each spell slot level above 1st.