Magic kills on units have a 5% chance to summon a friendly skeleton fighter.
When to choose it
Necronomicon: Magic kills on units have a 5% chance to summon a friendly skeleton fighter.
Take Necronomicon when magic attacks regularly finish units and you want those kills to help build an allied force. Keep fights within reach of the summoned fighters.
Pairings and trade-offs
The summon depends on both a magic kill and the chance roll. Work Contract converts consumed farmers into a different ally; it is not another way to trigger Necronomicon.
Compare Necronomicon with alternatives
Artifact
Effect and condition
Necronomicon
Magic kills on units have a 5% chance to summon a friendly skeleton fighter.