Burn Away (ability <3>)
    Destroy target ability.



Anchorite Kalinna (hero)
    X, Flip Anchorite Kalinna --> Destroy target ability with cost X.



"Chipper" Ironbane (alliance ally <2>)
    (X), Destroy "Chipper" Ironbane --> Destroy target ability or equipment with cost X.

Kavai the Wanderer (alliance ally <6>)
    (1), Destroy Kavai --> Destroy target ability or equipment.

Lafiel (alliance ally <6>)
    (2), [Activate] --> Destroy target ability.



Sister Rot (horde ally <5>)
    When Sister Rot enters play, you may destroy target ability.

Besh'iah (horde ally <6>)
    Destroy an ally in your party --> Destroy target ability.

Confessor Mildred (horde ally <2>)
    (2), Destroy Confessor Mildred --> Destroy target ability.



Dispel Magic (priest ability <1>)
    Destroy target ability.

Convalescence (priest ability <2>)
    Your hero heals all damage from target ally. You may destroy an ability attached to that ally.




======== Oddball / doesn't always apply to the ability you might want ========

Crown of Destruction (armor)
    At the end of each player's turn, that player destroys one of his abilities, allies, or equipment.

Purge (shaman ability <1>)
    Destroy target ability unless it's attached to a friendly hero or ally.

Kryton Barleybeard (alliance ally <1>)
    (2), Destroy Kryton Barleybeard --> Put target ability into its owner's hand.