Sky Warning

2nd-level abjuration

Classes: ranger, sorcerer, wizard

Casting Time: 1 action

Range: 120 feet

Components: V, S, M (a metal bell or gong)

Duration: 8 hours

This spell functions like an alarm spell, but its area extends 50 feet per caster level into the air, and it is triggered only by flying creatures, including creatures using levitate, feather fall, and any other magical effect that allows travel through the air.

You may set your sky warning to trigger only by the entry of flying creatures of a certain size, and you may also choose to exclude flying creatures with Intelligence 2 or lower from triggering its alarm. If you choose the latter option, the alarm is still triggered if a more intelligent creature is mounted on a flying mount with Intelligence of 2 or lower.