Harmony

Harmony is a daemon world in the Eye of Terror held by the Emperor’s Children, formerly the site of the Canticle City. This fortress crowned the planet and housed a clone of Horus, which Fabius Bile kept there.

The Black Legion, newly formed under Abaddon, destroyed the Canticle City by dropping the cruiser Tlaloc onto it from orbit. Abaddon then killed the cloned Horus.

Cracks still split the planet’s crust as a result of the fortress’s destruction. Eidolon’s Phoenix Conclave continues to use the remains of the site.