Astral Mark of Shiva FFXV (NGtE)

You passed the trial and now bear the Astral Mark of the Glacian Shiva.

• You can summon the Glacian Shiva to intervene in a time of need. If two or more of your allies are unconscious, as an Action you can roll a d100, on an odd number, Shiva appears, an ethereal presence of an Astral entity. You can cast freezing sphere or wall of ice spell at 9th level, using your Spell Save DC.
• If any Astral entity intervenes, you can’t use another Astral Mark feature again for 7 days. Otherwise, you can attempt to use it again after you finish a long rest.