Halfling/Features

From Kronopolis and the Flat Plane

Lucky

When you roll a 1 on an Attack roll, ability check, or contested check, you can reroll the die and must use the new roll. When you roll a 7 on an Attack roll, ability check or contested check, you can count it as a 10 instead.

Halfling Nimbleness

You can move through the space of any creature that is of a Size larger than yours.