Spell Construct

A Spell Construct is a relatively simple device that, when inscribed with a spell and placed into the world, will persistently cast said spell.

Constructs are most useful for long-running spells that respond to happenings in the world, or trigger periodically.

If a source of mana is required, any Knot may be inserted into the center of the Construct with a right-click. They may also be shift-right-clicked to reset the currently running spell, ignoring any previous blunders.