GuildWiki has been locked down: anonymous editing and account creation are disabled. Current registered users are unaffected. Leave any comments on the Community Portal.
This skill does not require a lead attack. This means you can knock down a foe by any means, such as Horns of the Ox or Shock, and then use Falling Spider.
If you're fast enough, you can use this skill followed by Falling Lotus Strike before the foe gets up, although you need an IAS to do so.