Ammomancers are enemies that vaguely resemble Gunsingers but paler and wearing darker robes.
If left uninterrupted, Ammomancers will stand still and summon a Shelleton. The summoning can be interrupted by getting close to the Ammomancer or hurting it, causing it to run away, or by killing the Ammomancer.
If left alone in a room without any other enemies or after summoning a total of 3 Shelletons, Ammomancers will go mad, stop their summoning rituals, and instead will attempt to hurt players by running into them.
If an Ammomancer successfully summons a Shelleton but is killed afterwards, then the Shelleton that was summoned will collapse into its skull, allowing the player to finish it off more easily.