The bow aches in your hands.

[sffp]

As a counter-weight to my day brightener from last week, my kobold necromancer slays Bolg, Son of Azog and discovers his loot:
The Holy Book of Prayers [Battle Blessings] {Not Useful}

But what's this, an artifact bow - only my second artifact!

b) the Long Bow 'Aurth' (x3) (-11,-9) <-4, -10> {??}
Dropped by Bolg, Son of Azog at 1550 feet (level 31)

You do not know the full extent of this item's powers.
-4 dexterity.
-10 shooting speed.
Cannot be harmed by Acid, Fire.
Sustains constitution.
Slows your metabolism. Drains experience.

When activated, it causes your next attack upon a monster to
confuse it.
Takes 65 to 72 turns to recharge.
Your chance of success is 93.7%

Well maybe not so useful
On the plus side, I did learn the runes of Shooting Power and Experience Drain.

And I've never seen "The bow aches in your hands" before.
Slow digestion and sustain Con are good...

[sffp]

Just for completion, said bow also had the runes of siren curse, teleporation ban and hallucination curse

For some reason, I was unable to purchase it back from the store

[DrWho42]

a new angband phrase for me!

[Selkie]

Slow digestion! I say keep it. If only it had feather falling as well this would be a beast

[Pete Mack]

I am not sure how "the bow aches in your hands". I suspect "your hands ache as you grasp the bow."

[whartung]

I am not sure how "the bow aches in your hands". I suspect "your hands ache as you grasp the bow."

You misunderstood. The bow is actually suffering discomfort by you holding it. That's why it's such a horrible bow.

[invisibletroll]

High voltage bow might arch on your hand.

[Pete Mack]

All bows arch in your hands