This is an epic dwarven defender ability. It is activated by using the player tool 10 feat, which you will be given when becoming an epic dwarven defender.
When used it grants the following bonus's:
+1d6 Positive Damage
+1 AB (+1 /10 DD levels)
This ability lasts for 1 Turn / Dwarven Defender level and is fitted with a timelock.
it clearly says timelock so either you need to change text or give higher lvl dds more times a day imo