Alarm

School: abjuration
Circle: arcane 1st, bardic 1st, occult 1st
Spell Components: V, S
Action Time: 1 action
Range: short
Shape: placed radius
Targeting: all
Base Duration: long
Saving Throw: no
Spell Resistance: no
Ritual Components: bell, 3sp (silver wire)

Creates a radius which will silently alert the caster whenever a creature of Tiny or larger size enters and exits. This alert does not interrupt concentration and the warded area will not be removed by silence, but potentially would be by ground-targeted dispel magic or from an antimagic field.