Zerae is the bride of Hefaetrus, and her dominion is vengeance and storms. If an Amazon warrior has proven herself worthy, the goddess Zerae can empower her with the ability to strike down enemies by hurling javelins charged with power as if she had snatched lighting from the heavens.

Zerae is the source of power behind the following Diablo II Amazon skills:

Power Strike
Lightning Bolt
Charged Strike
Lighning Strike
Lightning Fury

Description and more information on these skills could be found in the Diablo II Amazon Javelin and Spear Skills page.

Reference

Diablo II Manual