Does the ranger's UA Primal Awareness variant class feature allow you to cast each spell once per long rest, or only one of them?

Question

The Unearthed Arcana - Class Feature Variants article introduces Primal Awareness, a new variant feature for the ranger that replaces the original 3rd-level feature, Primeval Awareness.

This feature lists a number spells as additional spells known that don't count against the number of ranger spells you know. That part of the feature is fairly clear. However, it goes on to say:

You can cast each of these spells once without expending a spell slot. Once you cast a spell in this way, you can't do so again until you finish a long rest.

To me, this section is unclear and has two possible interpretations:

1. "You can cast each of these spells once..." - You can cast each of the spells lists 1/long rest without expending a spell slot. A total of 6 spells cast per day.
2. You can cast any of these spells once. - Once you have cast one of these spells in this way, you cannot cast any of them until you finish a long rest. A total of 1 spell cast per day.

I can make a logical argument for both cases, one based on the first sentence, the other on the second.

Which of these interpretations is correct?

Answer 1

The first interpretation is correct

Taking this a line at a time

You can cast each of these spells once without expending a spell slot.

Each is the key word here, and clearly refers to every spell being different

Once you cast a spell in this way, you can't do so again until you finish a long rest.

A is the key word in this line, and the object being referenced has already been identified in the line earlier, so it refers to every spell individually.

In summary:

You can cast each of the spells 1/long rest without using a spell slot. A total of 6 spells per day.

Note:

As with all UA content, this is still pending feedback, so while I think my interpretation is correct based on the current wording there is scope in terms of balance for the opposite interpretation; I just don't see support for it within the wording.

Answer 2

You can cast each of the spells in the list once.

As you said in option one in your question, the text reads "You can cast each of these spells once..."; implying that you can cast each of the individual spells listed in the table above it once (refreshing after a long rest).