You can twist your weaves to trade accuracy for power. Tier: Heroic Benefit: When using an attack weave, you can take a -2 penalty to all attack rolls made as part of the power to gain a +2 bonus to all damage rolls made as part of the power.At 11th level, the bonus increases to +4. At 21st level, the bonus increases to +6. Special: You can take metamagic feats, treating your arachnomancer weaves as arcane powers for the purposes of metamagic feats' prerequisites and benefits.