Instead of attacking normally with a melee weapon,
attack multiple enemies within that weapon’s reach with it.

Cleave cannot be used on attacks triggered against a specific enemy (ex: Counterattack, Counter Spell, Welcoming Strike).

You cannot combine any abilities which allow you to attack extra targets with Cleave, including Cleave, Skewer, and Ground Pound.

Dual Wield:
When you Cleave with one dual wielded weapon, you may Cleave the same targets with the other without spending any more stamina.

When you overkill an enemy with an attack with a melee weapon, you may attack another enemy within that weapon’s reach with it, dealing only the overkill damage if you hit.
This attack cannot critically hit.

(ex: If you hit an enemy which has 10 HP for 20 damage, you may attack another enemy within reach for the remaining 10 damage.)

When you miss with an attack with a melee weapon, you may redirect that attack at another enemy which is also within that weapon’s reach.
Roll a new roll to hit the new target.

You cannot use Redirect Cleave when you miss with Redirect Cleave
(which would allow you to keep trying until you hit).

You cannot use Redirect Cleave with abilities which attack extra targets (Cleave, Dual Cleave, Skewer, Circle of Blows, Ground Pound)
(which would allow you to redirect many attacks at the same target).

Redirect Cleave redirects an existing attack, potentially salvaging it against a new target. It is not another attack (though different circumstantial bonuses or penalties may or may not apply). Therefore, abilities which attack extra targets cannot be used on both the original attack and the redirected attack.

Instead of attacking normally with a long melee weapon, attack each target in a straight line extending as far as that weapon can reach.

You cannot combine any abilities which allow you to attack extra targets with Skewer, including Cleave and Ground Pound.

Dual Wield:
If you Skewer with one dual wielded long weapon, you may Skewer with another dual wielded long weapon without paying any more stamina.