Bloodskal Blade

 is a unique greatsword found in.

It must be used in order to escape Bloodskal Barrow.

Acquisition
In the quest The Final Descent, travel into the depths of Bloodskal Barrow. There, the Bloodskal Blade can be found next to the corpse of Gratian Caerellius.

Enchantment
When power attacking with the blade, it sends out a horizontal or vertical energy blast that deals 30 points of damage, depending on the type of power attack used (left, right, and backward power attacks make horizontal waves, while forward and standing power attacks make vertical waves). This energy wave travels in whichever direction one is facing, and is used to open the seal where the blade is found.

Trivia

 * This is the same blade encountered in, see Bloodskal.
 * Can be improved at a grindstone with a silver ingot.
 * Cannot be disenchanted.
 * The energy wave can travel through multiple people at once doing damage to all of them.
 * The energy wave can go through walls.
 * The energy wave can travel roughly 15 feet.
 * Followers given this weapon will not send out the energy blast with power attacks.
 * Power attacks on horseback will not send out energy wave.
 * The Bloodskal Blade could be Deadric in nature, due to its red glowing properties and judging by the area where you grabbed it.