How about if the permanent is used to steal an ability which is inherent to a creature, such as momentum, growth or devour - the permanent destroys itself. Not knowing how, as an inanimate object, to devour or grow - the many complexities of thought processes the inanimate 'artifact' or 'permanent' tries to undertake when 'stealing' an ability such as 'devour' cause it to self-destruct.
That way, you have your lobotomizer effect. A once off 'destruct card to lobotomize target creature'
Secondly, the card can still steal certain abilities (from creatures), most notable Heal, Mutate and Lobotomize. This will give you an added dimension of tactics to know whether or not to sacrifice your Conduit to make your opponents Otyugh useless, or wait until he plays a Mindflayer and then steal the lobotomize ability and have a Conduit which can lobotomize anything he plays in the future.
A quick question, this can steal the ability from another permanent right? In which case, it rocks. I think if it does steal the ability from your opponents permanent, that permanent should, for arguments sake, be removed from the game. What is the sense in having a Shard of Gratitude with no ability, or a Hourglass that does nothing.
The true strength in this card is the ability to duplicate 'any' (except devour/momentum/growth/dive etc) ability in the game, particularly Weapon Effects.
The Firefly Queen has 2 Fahrenheits and 6 Eagle Eyes (I think). She also carries a high ratio of Animate Weapons to Weapon Cards. If you could 'steal' the ability from a fahrenheit or a eagle eye, before the AI animates it. Perfect. It gives you so much more leverage in countering your opponent through using his abilities against him - the Darkness card Steal was the only method of doing this before, and that is highly rare (6 per deck...)
Nice idea Akromat, upping your karma for this.