Isaac periodically throws an axe projectile at the nearest enemy, flying forwards a short distance before accelerating backwards, where it will fly off-screen.
The axe deals 1.5× Isaac's damage every 1/6th of a second to enemies.
The damage of the axe cannot go below 2, or above 20.
The axe has a cool-down of 5 seconds before another one can be thrown.
The axe will pierce through all enemies they hit, as well as ignoring walls and obstacles.
Notes
The axe has a set range independent from Isaac's range, and may not always hit the enemy they're targeting if it's outside of its range.
The axe is not affected by Isaac's tear effects or tear replacements.
Interactions
Tainted Fiend: While in his split form, each minion can separately throw an axe projectile.
Chaldean Axe is based on various translations from the excerpt Jeremiah 46:22 from The Bible, describing the Egyptian army's downfall against the kingdom of Babylon's forces as "they (came) against (Egypt) with axes, like men who cut down trees".
Chaldean Axe's name is also partly a reference to Chaldea, a country in the Arabian Peninsula that existed between the late 10th or early 9th and mid-6th centuries BCE, after which the country and its people were absorbed and assimilated into the indigenous population of Babylonia.
In some older translations of Hebrew books in the Old Testament and the Bible, "Chaldean" was a misnomer used to describe people that spoken Aramaic languages in the ancient region of Syria and Iraq during the Babylonian period, and some descriptions of the Chaldeans presented them as a war-like nomadic tribe of people that lived in southern Babylonia.
The axe's appearance is based on a scene from the movie Shrek 2, when Prince Charming and the Fairy Godmother orders a "Medieval Meal" from the fictional restaurant "Friar's Fat Boy" that comes with a similar-looking axe "toy".[1]
Isaac's appearance when he has Chaldean Axe is a reference to the Viking Helmet cosmetic item that was from the online MMO, Club Penguin.
The thrown axe's behavior is based on the Cross weapon from the roguelike Vampire Survivors.