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Web Net (4e Feat)
From D&D Wiki
You learn to use your sticky silk webs in conjuction with your immobilizing powers.
Prerequisite: Ettercap (4e Race), Level 21
Benefit: Whenever you immobilize a target, you can chose to restrain them instead. If this is a condition that a save can end, the target takes a -2 penalty to their saving throw.