Create monster is the result of using any of the following to summon a monster:

• scroll of create monster
• wand of create monster
• spell from spellbook of create monster
• apply a bag of tricks
• most common effect of a magic trap
• ctrl +  g in wizard mode. Specify ] to create a random monster.

All of the above create the same types of monsters with the same relative probabilities as those randomly generated out of sight - in short, unspecified opponents of appropriate difficulty.

Other than that, a large number of more specialized ways to create monsters exists. See the extinctionism spoiler for a complete list; some examples are:

• summon nasties
• summon insects
• acid blobs from confused scroll of create monster
• throne looting
• fountain quaffing
• sink kicking
• engraving on tombstones
• cursed scroll of genocide
• werecreatures' help summoning
• Demon summoning
• pudding and gremlin splitting

Using "create monster" is an important part of extinctionism, because it is the fastest way to generate monsters to make extinct.

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