Unending Strength

Increase strength by 1, to a maximum of 20

For every size above medium, weapons are considered one class lighter, following this pattern:

Two Handed > Heavy > None > Light > Light & Finesse

If two size values conflict (at 2 decreases on the halberd, for example, it would have both none and light), use the heavier value. 

You count as if you were one size larger for the purpose of determining your carrying capacity and wielding.