A bit of bat fur.
Source: 5e 2014 Rules
You create an invisible, magical eye within range that hovers in the air for the duration. You mentally receive visual information from the eye, which has normal vision and darkvision out to 30 feet. The eye can look in every direction. As an action, you can move the eye up to 30 feet in any direction. There is no limit to how far away from you the eye can move, but it can't enter another plane of existence. A solid barrier blocks the eye's movement, but the eye can pass through an opening as small as 1 inch in diameter.
About Arcane Eye
Arcane Eye is a Level 4 level spell from the school of Divination.
This spell has a casting time of action , and a range of 30.0 ft (9.1 m) . It has a duration of Instantaneous.
Casting Tips
2 tips
Casting Tips
Consider these tips when casting this spell:
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Tactical Use: Mid-tier spell with significant tactical impact. Great for resource management challenges.
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Concentration: Requires concentration. Maintain focus to sustain the spell's effect.
School of Magic: Divination
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School of Magic: Divination
Divination spells reveal hidden information, predict the future, or detect truths.
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