Giant, Stage 4 (Greater Giant’s Strength)

Greater Giant’s Strength.
Prerequisite: Giant’s Strength
Your Strength score increases by 2, to a maximum of 26.

Flaw.
The Bigger You Are. Your prodigious size leaves you vulnerable to creatures whose size make them nearly beneath your notice. Creatures who are at least two size categories smaller than you (Small if you are Large, for example) score critical hits on a roll of 18, 19, or 20 on attack rolls against you. In addition, you cannot be immune to critical hits by any means.