Half Blood Outcast

You despise your nonhuman side.
Prerequisite: Half-elf or half-orc.
Effect: You suffer a -2 penalty on all attack rolls, saving throws, and skill checks when within line of sight of an elf (if you are a half elf) or an orc (if you are a half-orc).
Source: Dragon Magazine #: 328 (Nobody’s Perfect – New Flaws for Nonhumans)