This dojo is complete with punching bags, a weapon rack, fencing equipment, and training automatons impressed with the personalities of history's greatest masters. Working with them allows you to refocus your fighting style.
Wondrous Item 425,000 gp
When you spend 24 hours in training at the dojo, you can replace one martial power as if you had gained a level and retrained. After you use this property, you can’t use it again until you gain a level.
Published in Adventurer's Vault 2, page(s) 79.