The Aspect of Charon bolts a Cast onto the Moonstone Axe, erupting it like a full Omega Cast whenever your Omega Special sweeps through it.
The Aspect of Charon gives the Moonstone Axe a second way to use its Cast: hit your own Cast with the Omega Special, and it erupts like a full Omega Cast.
That Cleave-Cast turns the axe into a room-clear weapon. You drop a Cast on a pack, sweep your Omega Special through it, and the trap detonates with Omega Cast force, scaling up to plus 45 percent size and damage at the top rank.
Because the wiki confirms the Cleave-Cast functions identically to a real Omega Cast, it inherits every Omega Cast boon in the game, which is where the build comes together.
This guide covers how the Cleave-Cast works, its rank scaling, the Omega Cast boons that power it, and when to pick Charon over the axe's other aspects.
your Cast erupts like an Omega Cast when struck by your Omega Special. the Moonstone Axe, whose wide Omega Special triggers the Cleave easily.
Omega Cast boons like Poseidon Geyser Spout.The Aspect of Charon makes your Cast erupt like an Omega Cast the moment your Omega Special strikes it, a combo the wiki calls the Cleave-Cast.
On the Moonstone Axe, the Omega Special is a wide cleaving blast, so lining it up over your own Cast is easy. When it connects, the Cast does not just snare; it detonates with the full force of an Omega Cast, scaled by the aspect rank.
The important detail is that the wiki states the Cleave-Cast functions identically to a real Omega Cast. That means it counts as an Omega Cast for every boon and upgrade that cares, so the eruption carries whatever Omega Cast effects you have stacked, not just raw damage.
Cast onto the pack, then aim the Omega Special through it. The Cleave only triggers when your Omega Special strikes your Cast, so place the Cast first and treat the Omega Special as the detonator, not a separate attack.
The aspect scales Cleave-Cast size and damage together, so every rank makes the eruption both bigger and stronger.
| Rank | Cleave-Cast Size and Damage |
|---|---|
| Rank I | +10% |
| Rank II | +15% |
| Rank III | +20% |
| Rank IV | +25% |
| Rank V | +30% |
| Rank VI | +45% |
Rank I costs Pearl and Obol Points, ranks II through V each cost Nightmare, and the rank VI jump to plus 45 percent unlocks through the Hephaestus Legendary boon Premium Service. Since the bonus covers both size and damage, higher ranks widen the area you can detonate as well as the hit, which stacks up fast against grouped enemies.
The size bonus matters as much as the damage. A larger Cleave-Cast catches more of a pack in one eruption, so ranking Charon up turns a single-target trap into a full room-clear over the course of a run.
The strongest Charon build stacks Omega Cast boons, keeps Magick high for repeated detonations, and uses the axe wide Omega Special as the trigger.
Since the Cleave-Cast counts as an Omega Cast, every Omega Cast boon you take applies to the eruption. Build one strong Cast payload, support it with Magick so you can recast and re-detonate, then add a defensive layer because the combo wants you near the pack.
Aspect of Charon (Cleave-Cast eruption) Poseidon Geyser Spout (Omega Cast damage)
Apollo (Lucid Gain and Prominence Flare on the Cast)
Ares Meat Grinder (more Omega Cast damage)
Magick regen sources (recast and re-detonate)
Aphrodite Weak (safety inside the pack)In practice this build drops a loaded Cast, cleaves it with the Omega Special, and erupts a stacked Omega Cast on the whole group. Across multiple runs, the Cleave-Cast carries the run because it turns one trap into the axe's best room-clear tool.
The Cleave-Cast inherits Omega Cast boons, so any god who boosts the Omega Cast feeds this aspect directly.
Poseidon Geyser Spout is the headline pick, adding strong damage to the Omega Cast the Cleave mimics. Apollo Lucid Gain and Prominence Flare both apply, and Ares Meat Grinder piles on more Omega Cast damage, which the wiki lists among the boons the Cleave-Cast benefits from.
Aphrodite Weak keeps you safe while you set up in melee, and 
Artemis crit can roll on the eruption. In practice, one Omega Cast damage boon plus Magick sustain is the whole Charon core; everything else is support.")
Prioritize Omega Cast boons over Attack or Special boons. The Cleave-Cast scales as an Omega Cast, so a single strong Omega Cast boon does far more for this build than a generic damage boost spread across your other moves.
Pick Charon for a Cast-bomb room-clear, and pick a different aspect for raw attack damage or crit.
The Aspect of Thanatos speeds your Attack and stacks crit on your Omega Moves, the highest single-target ceiling. 
The Aspect of Melinoe adds flat Attack Power and Max Life, the safe default, and the hidden Aspect of Nergal swaps in the Rock Lion Mace and a Berserk state.
Charon is the area and control option, best when you want to delete grouped packs rather than melt single targets. If most of your trouble is bosses, Thanatos is the stronger pick. The full Moonstone Axe weapon guide compares all four aspects in depth.
On the Moonstone Axe, the Aspect of Charon makes your Cast erupt like an Omega Cast when struck by your Omega Special. This Cleave-Cast scales size and damage together, up to plus 45 percent at rank VI, and counts as a real Omega Cast for boons.
The Aspect of Charon is an aspect of the Moonstone Axe, Zorephet. Its Cleave-Cast combo works well there because the axe Omega Special is a wide cleaving blast that easily sweeps through your own Cast to trigger the eruption.
Stack Omega Cast boons like Poseidon Geyser Spout, Apollo Lucid Gain and Prominence Flare, and Ares Meat Grinder, since the Cleave-Cast counts as an Omega Cast. Keep Magick high to recast and re-detonate, and add Aphrodite Weak for safety in melee.
You drop a Cast on a pack, then strike it with your Omega Special. The Cast erupts like a full Omega Cast rather than just snaring, and the wiki confirms it functions identically to an Omega Cast, so it inherits every Omega Cast boon and upgrade.
Yes, it is the best Moonstone Axe aspect for clearing grouped enemies. The Cleave-Cast turns one trap into an Omega Cast eruption, and stacking Omega Cast boons makes it scale hard. It is weaker than Thanatos for pure single-target boss damage.
Any Omega Cast boon. The wiki specifically lists Poseidon Geyser Spout, Apollo Lucid Gain and Prominence Flare, and Ares Meat Grinder as boons the Cleave-Cast benefits from, because the eruption is treated as a genuine Omega Cast.
Pick Charon for area control and pack clear through the Cleave-Cast, and pick Thanatos for raw attack speed and stacking Omega crit against single targets. Charon shines on groups, while Thanatos has the higher boss-damage ceiling.
Rank VI is the goal because the jump to plus 45 percent size and damage is a large gain. The size increase matters as much as the damage, since a wider Cleave-Cast catches more of a pack in a single eruption.
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Game data and weapon art adapted from hades.fandom.com, used under CC BY-SA 3.0. Original content remains the property of the wiki contributors and Supergiant Games.