Craft the World Wiki
Horn Spell
Horn Spell.png Horn Flag.png

This spell calls dwarves to gather in a specific place, to attack or defend something together, for example.

Type Spell
Mana cost 0
Tech needed Basic Weaponry

Horn spell[1] is a magic spell that creates a flag which all dwarves gather to. This flag can be useful for many reasons, it allows your dwarves to congregate in one area to help battle monsters or all hide from a wave of monsters.


To use the horn spell:

  1. drag the spell item from the inventory to the quick bar
  2. click to highlight the item on the quick bar
  3. click anywhere (accessible by dwarfs) in the world to place the flag.

To remove the flag:

  1. click the flag to create an "X" button; and
  2. click the "X" to cancel flag.

Crafting recipe[]

Spells only need to be crafted in Sandbox mode.
In Tech Tree mode, they are unlocked by reaching the required crafting tech.
Crafting station
Ingredient(s) Qty.
Bones.png Bones 4
Pink Crystal.png Pink Crystal 1
Wood.png Wood 2
Crafting grid
Bones.png Pink Crystal.png Bones.png
Bones.png Wood.png Bones.png
Horn Spell.png Horn Spell 1


Old appearance of the flag.

Version Release Changes
0.9.007 1 Dec, 2013 Spell now gathers every dwarf (not only idling ones).
1.6.000 25 Jun, 2019 The mana cost was reduced from three to zero.


  1. This is the inventory name of the item. In game files it may appear as mhorn, Castthehorn, spell_horn, flag_horn, buildings\horn or magic\dwarf.