An Unkindness of Ravens (Actual)
Actually, it's a conspiracy of ravens.
More for the list:A Growth of Trolls
A Garden of Topiary Guardians
A Mulch of Tendriculos'
A Book of Living Spells
A Tempest of Storm Elementals
A Widget of Clockwork creatures
A Clutch of Spawn of Tiamat
A Monastery of Githzerai
An Assault of Githyanki
A Swarm of Umber Hulks
A Guild of Ethereal Filchers
A Deception of Changelings
A Shadow of Drow
A Gaze of Beholders
A Crusade of Archons
A Zoo of Guardinals
A Flight of Angels (Actual)
A Circus of Halflings
A Prank of Gnomes
A Tsunami of Sahuagin
A Stampede of Gorgons
A Devouring of Bulettes
A Vigilance of Eladrin
An Infestation of Gricks
A Concordance of Celestials
Potential alternates:A Morgue of Wights (so easy to do with death by negative levels)
A Tomb of Liches
A Pact of Allips (they are formed through suicide...)
A Judgement of Inevitables
A Troupe of Elves (actual term)
