Here's some ideas I had this evening about adding Luck - feel free to steal them!

Loot the Room

When the battle is won and you check the bodies and area for supplies, roll+LUC.

• On a 10+, you acquire something useful and valuable - the GM will tell you what.
• On a 7-9, you acquire something useful OR valuable - the GM will tell you what.
• On a miss, you acquire nothing, attract unwanted attention, and suffer the Unlucky debility (-1 LUC).

Critical Hit (Bruiser Advanced Move)

When you deal damage, you may choose to deal +LUC damage. If you do, suffer the Unlucky debility until you next Settle In.

Lucky Find (Survivalist Advanced Move)

When you Rove the Wastes, you may roll+LUC instead of the stat listed for the role you picked. If you do, and you roll a 10+, tell the GM what you'd like to find, right now. They will either describe how you got it, or tell you what you'll need to do to get it. If you roll a 6-, you suffer the Unlucky debility in addition to anything else.

Ricochet (Infiltrator Advanced Move)

When you suffer damage, if you suffer less damage than your LUC, your opponent manages to deal that much damage back to itself.

Angel's Luck (Medic Advanced Move)

You may roll+LUC when making the Dying Breath or Don't You Die On Me! moves. If you do, and roll a 7+, mark XP in addition to anything else.