Monastic Disciple [Multiclass Monk]

Heroic Tier
Prerequisite: Dex 13
Benefit: You gain training in one skill from the monk’s class skills list.
Choose one of the monk’s Flurry of Blows powers. You can use that power once per encounter.
    In addition, you can wield ki focuses.

Published in Player's Handbook 3, page(s) 193.